MESON Chess Problem Database
Problem Display
PID: 239801 (B2r1B2/3Q1NP1/3q4/3b4/Pbpk1N1R/1P2p3/4P2K/2R5 w - - 0 1)
Cristoffanini, Guido
L'Italia Scacchistica, 1932
#2
12 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Rxc4#
- 1...Kc5
- 2.Qa7#
- 1...Qxf4+
- 2.Rxf4#
- 1...Qc5
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Qe5
- 2.Rxc4#
- 1...Qe7
- 2.Se6#
- 2.Rxc4#
- 1...Qb8
- 2.Rxc4#
- 1...Qxf8
- 2.Sd3#
- 2.Se6#
- 2.Rxc4#
- 1...Qa6
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Qb6
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Rxc4#
- 1...Qc6
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Qe6
- 2.Sxe6#
- 2.Rxc4#
- 1...Qf6
- 2.Se6#
- 2.Rxc4#
- 1...Qg6
- 2.Se6#
- 2.Sxg6#
- 2.Rxc4#
- 1...Qh6
- 2.Se6#
- 2.Rxc4#
- 1...Qxd7
- 2.Se6#
- 1...Bh1
- 2.Rxc4#
- 1...Bg2
- 2.Rxc4#
- 1...Bf3
- 2.Rxc4#
- 1...Be4
- 2.Rxc4#
- 1...Bc6
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bxa8
- 2.Rxc4#
- 1...Ke4
- Tries
- 1.Kh3?
- threat
- 2.Se6#
- 1...Qe6+
- 2.Sxe6#
- 1...Be6+
- 2.Sxe6#
- 1...Ke4
- 2.Rxc4#
- 1...Kc5
- 2.Qa7#
- 1...Qxf4
- 2.Rxc4#
- 2.Rxf4#
- 1...Bxf7
- 2.Sd3#
- 1...Bxa8
- 2.Rxc4#
- 1...Bc6
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bg2+!
- threat
- 1.Bxd6?
- threat
- 2.Sxd5#
- 2.Se6#
- 1...Ke4
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Sg6#
- 2.Rxc4#
- 1...Rxa8
- 2.Se6#
- 1...Bxf7
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Bxa8
- 2.Rxc4#
- 1...Re8
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Be1
- 2.Se6#
- 1...Bh1
- 2.Sg2#
- 2.Se6#
- 2.Rxc4#
- 1...Bg2
- 2.Sxg2#
- 2.Se6#
- 2.Rxc4#
- 1...Bf3
- 2.Se6#
- 2.Rxc4#
- 1...Be4
- 2.Se6#
- 2.Rxc4#
- 1...Bc6
- 2.Rxc4#
- 1...Be6
- 2.Sxe6#
- 1...Bb7
- 2.Rxc4#
- 1...Bxd6!
- threat
- 1.Qxd6?
- threat
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Rxc4#
- 2.Qe5#
- 1...Ke4
- 2.Qe5#
- 1...Rxd6
- 2.Se6#
- 1...Rxf8
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Rxc4#
- 2.Qxd5#
- 1...cxb3
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Qe5#
- 1...Rc8
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Qe5#
- 2.Qxd5#
- 1...Re8
- 2.Se6#
- 2.Rxc4#
- 2.Qxd5#
- 1...Be1
- 2.Se6#
- 2.Rxc4#
- 2.Qe5#
- 1...Bc3
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Qe5#
- 1...c3
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 2.Qe5#
- 1...Bxd6!
- threat
- 1.Kh3?
- Keys
- 1.Kg1!
- threat
- 2.Se6#
- 1...Qg6+
- 2.Sxg6#
- 1...Ke4
- 2.Rxc4#
- 1...Kc5
- 2.Qa7#
- 1...Qxf4
- 2.Rxc4#
- 2.Rxf4#
- 1...Bxf7
- 2.Sd3#
- 1...Bxa8
- 2.Rxc4#
- 1...Qe6
- 2.Sxe6#
- 2.Rxc4#
- 1...Bc6
- 2.Rxc4#
- 1...Be6
- 2.Sxe6#
- 1...Bb7
- 2.Rxc4#
- threat
- 1.Kg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- K(d);P-FLIGHT,P_SPINB(e)::R(A),XP(c)
- K(d);P_SPINP(c),P_SPINQ(f),S_FLIGHT::QAB(H)
- Q(f);CHECK,OGATE,P_SPINB(e),P_SPINQ(f),XS(F)::R(G),XQ(f)
- Q(f);P_SPINB(e)::R1(A),XP(c)
- Q(f);N_PINS(F),XQ(H)::R(G)+S(F),DCHECK
- B(e);N_GUARD,P_SPINQ(f)::R1(A),XP(c)
- B(e);N_GUARD,P_SPINQ(f),XB(K)::R1(A),XP(c)
- Tries
- Try
- K(C);N_SPINS(F),P-FLIGHT
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(f);CHECK,P_SPINB(e)::R(G)+S(F),DCHECK,XQ(f)
- B(e);CHECK,P_SPINQ(f)::R(G)+S(F),DCHECK,XB(e)
- K(d);P-FLIGHT,P_SPINB(e)::R(A),XP(c)
- K(d);P_SPINP(c),P_SPINQ(f),S_FLIGHT::QAB(H)
- B(e);N_GUARD,P_SPINQ(f),XS(I)::R(G)+S(F)
- B(e);N_GUARD,P_SPINQ(f),XB(K)::R1(A),XP(c)
- B(e);N_GUARD,P_SPINQ(f)::R1(A),XP(c)
- Refutation
- B(e);CHECK,P_SPINQ(f)
- Try
- B(L);N_SPINS(F),XQ(f)
- Threat
- DUALS(2)
- Vars
- R(g);XB(K)::R(G)+S(F),DCHECK
- B(e);N_GUARD,XB(K)::R1(A),XP(c)
- R(g);::R(G)+S(F),DCHECK
- R(g);P_PINR(G)::R(G)+S(F),DCHECK
- B(b);::R(G)+S(F),DCHECK
- B(e);N_GUARD::R1(A),XP(c)
- B(e);::R(G)+S(F),DCHECK,XB(e)
- Refutation
- B(b);P_PINS(F),XB(L)
- Try
- Q(H);N_SPINS(F),P_PINB(e),XQ(f)
- Threat
- DUALS(9)
- Vars
- K(d);P-FLIGHT::QAR1(H)
- R(g);N_SPINB(e),XQ(H)::R(G)+S(F),DCHECK
- Refutation
- B(b);N_SPINB(e),P_PINS(F),XQ(H)
- Try
- Actual
- K(C);N_SPINS(F),S_FLIGHT
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(f);CHECK,N_GUARD,P_SPINB(e)::R(G)+S(F),XQ(f)
- K(d);P-FLIGHT,P_SPINB(e)::R(A),XP(c)
- K(d);P_SPINP(c),P_SPINQ(f),S_FLIGHT::QAB(H)
- B(e);N_GUARD,P_SPINQ(f),XS(I)::R(G)+S(F)
- B(e);N_GUARD,P_SPINQ(f),XB(K)::R1(A),XP(c)
- B(e);N_GUARD,P_SPINQ(f)::R1(A),XP(c)
- B(e);P_SPINQ(f)::R(G)+S(F),DCHECK,XB(e)
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).