MESON Chess Problem Database
Problem Display
PID: 160985 (2b3Q1/Nppp4/1p1P4/1N1P1K2/1PkP3R/PR1p1B2/P1r5/8 w - - 0 1)
Agostini, Valerio
Mariani, Stefano
L'Italia Scacchistica, 2009
#2
13 + 8
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Rc3#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...cxd6
- 2.Sxd6#
- 2.Qxc8#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rxa2
- Tries
- 1.Kf4?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Kf6?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Be2?
- threat
- 2.Bxd3#
- 1...Rxa2
- 2.Rc3#
- 1...Rxe2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...dxe2!
- threat
- 1.Be4?
- threat
- 2.Bxd3#
- 1...Rxa2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Bd3#
- 1...Rf2+!
- threat
- 1.Rh2?
- 1...Rxa2
- 2.Rc3#
- 1...Rxh2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rh3?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Re4?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rf4?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rg4?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rh5?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rh6?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rh7?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Rh8?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Qf7?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5#
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rc1!
- 1...Rxa2
- 1.Qg1?
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 1...Rc1
- 2.Qxc1#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Qf1#
- 1...c5
- 2.dxc5#
- 1...c6!
- 1...Rxa2
- 1.Qxc8?
- threat
- 2.Qxc7#
- 1...Rxa2
- 2.Rc3#
- 1...c5
- 2.dxc5#
- 1...c6!
- threat
- 1.Qd8?
- threat
- 2.Qxc7#
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Sxd6#
- 2.Qc7#
- 2.Qxc8#
- 1...c5
- 2.dxc5#
- 1...c6!
- threat
- 1.dxc7?
- threat
- 2.Sd6#
- 2.d6#
- 1...Rxa2
- 2.Rc3#
- 2.d6#
- 1...Re2
- 2.Sd6#
- 2.Rc3#
- 1...Rg2
- 2.Sd6#
- 2.Rc3#
- 1...d6+!
- threat
- 1.Kf4?
- Keys
- 1.Rh1!
- 1...Rxa2
- 2.Rc3#
- 1...cxd6
- 2.Qxc8#
- 1...Rc1
- 2.Rxc1#
- 1...Rb2
- 2.Rc3#
- 1...Rd2
- 2.Rc3#
- 1...Re2
- 2.Rc3#
- 1...Rf2
- 2.Rc3#
- 1...Rg2
- 2.Rc3#
- 1...Rh2
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...d2
- 2.Be2#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...Rxa2
- 1.Rh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- B(D);P_PINP(b)
- Threat
- B(D),XP(b)
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD,N_SPINP(b),XB(D)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- Refutation
- P(b);N_SPINP(b),XB(D)
- Try
- B(D);
- Threat
- B(D),XP(b)
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);::B(D)
- Refutation
- R(a);CHECK
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD,XR(G)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);XP(K)::S(H),XP(f)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- Q(M);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);XP(K)::S(H),XP(f)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f)
- Refutation
- R(a);
- Try
- Q(M);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);XP(K)::S(H),XP(f)
- R(a);OGATEB::QAR(M),XR(a)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::QAB(M)
- P(f);OGATE::R(G)+P(F),XP(f)
- Refutation
- P(f);
- Try
- Q(M);P_PINP(f),XB(h)
- Threat
- QAR(M),XP(f)
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATE::R(G)+P(F),XP(f)
- Refutation
- P(f);
- Try
- Q(M);
- Threat
- QAR(M),XP(f)
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATE::R(G)+P(F),XP(f)
- Refutation
- P(f);
- Try
- P(K);XP(f)
- Threat
- DUALS(2)
- Refutation
- P(g);CHECK
- Try
- Actual
- R(G);
- Vars
- R(a);N_GUARD,XP(A)::R1(C)
- P(f);OGATEB,XP(K)::QAR(M),XB(h)
- R(a);OGATEB::R(G),XR(a)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINB(D)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- P(b);OGATEB::B(D)
- P(f);OGATE::QAB(M)+P(I),XP(f),EP
- P(f);OGATE::QAB(M)+P(I),XP(f)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).