MESON Chess Problem Database
Problem Display
PID: 239477 (8/pKP5/3R1P2/Np1Np2q/1PR5/r1pk1bQ1/1P1p4/3B2B1 w - - 0 1)
Ellerman, Arnoldo
Magyar Sakkelet, 1967
#2
12 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Qxf3#
- 1...Qf7
- 2.Qxf3#
- 1...Qe8
- 2.Qxf3#
- 1...Qh2
- 2.Qxf3#
- 1...Qh4
- 2.Qxf3#
- 1...Qh7
- 2.Qxf3#
- 1...Qh8
- 2.Qxf3#
- 1...e4
- 2.Sf4#
- 2.Rd4#
- 1...Qg6
- Tries
- 1.Ka6?
- threat
- 2.Sxc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...cxb2
- 2.Sc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...bxc4
- 2.Sxc3#
- 1...Qg4
- 2.Sf4#
- 1...Qf7
- 2.Sf4#
- 2.Qxf3#
- 1...Qh4
- 2.Sf4#
- 2.Qxf3#
- 1...c2
- 2.Sc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...e4
- 2.Sf4#
- 2.Rd4#
- 1...Rxa5+!
- threat
- 1.Kxa7?
- threat
- 2.Sxc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...cxb2
- 2.Sc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...bxc4
- 2.Sxc3#
- 1...Qg4
- 2.Sf4#
- 1...Qf7
- 2.Sf4#
- 2.Qxf3#
- 1...Qh4
- 2.Sf4#
- 2.Qxf3#
- 1...c2
- 2.Sc3#
- 2.Sf4#
- 2.Sb6#
- 2.Se7#
- 1...e4
- 2.Sf4#
- 2.Rd4#
- 1...Rxa5+!
- threat
- 1.Bc2+?
- 1...Ke2
- 2.Qf2#
- 1...Kxc2!
- 1...Ke2
- 1.Rxc3+?
- 1...Ke4
- 2.Bc2#
- 1...Rxc3!
- 1...Ke4
- 1.Re4?
- threat
- 2.Sxc3#
- 1...Kxe4
- 2.Bc2#
- 1...Qf7
- 2.Qxf3#
- 1...c2
- 2.Sc3#
- 1...cxb2!
- threat
- 1.Rcc6?
- threat
- 2.Sxc3#
- 1...Ke4
- 2.Bc2#
- 1...cxb2
- 2.Sc3#
- 1...Qf7
- 2.Qxf3#
- 1...Qh4
- 2.Qxf3#
- 1...c2
- 2.Sc3#
- 1...e4
- 2.Sf4#
- 1...Qg4!
- threat
- 1.Qxe5?
- threat
- 2.Rd4#
- 2.Qd4#
- 2.Qe3#
- 1...Bxd5+
- 2.Rxd5#
- 1...Rxa5
- 2.Rxc3#
- 2.Rd4#
- 2.Qxc3#
- 2.Qd4#
- 1...Bxd1
- 2.Qe4#
- 1...bxc4
- 2.Qd4#
- 2.Qe3#
- 1...Qg5
- 2.Rd4#
- 2.Qd4#
- 1...Qg4
- 2.Qe3#
- 1...Qe8
- 2.Rd4#
- 2.Qd4#
- 1...Qh4
- 2.Qe3#
- 1...Qh6
- 2.Rd4#
- 2.Qd4#
- 1...Be4
- 2.Rd4#
- 2.Qd4#
- 2.Qxe4#
- 1...Qxe5!
- threat
- 1.Ka6?
- Keys
- 1.Sc6!
- threat
- 2.Sb6#
- 1...Kxc4
- 2.Se3#
- 1...bxc4
- 2.Sxc3#
- 1...Qg4
- 2.Sxe5#
- 1...Qf7
- 2.Sxe5#
- 1...Qh4
- 2.Sxe5#
- 1...e4
- 2.Rd4#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(h);N_GUARD::QAR2(D),XB(e)
- Q(h);N_GUARD,P_PINP(L)::QAR2(D),XB(e)
- Tries
- Try
- K(K);N_SPINS(H),P_SPINS(G),S_FLIGHT
- Threat
- DUALS(4)
- Vars
- P(f);XR(F)::R(I)+S(H),XP(c)
- Q(h);::R(I)+S(H),DCHECK
- Refutation
- R(b);CHECK,XS(G)
- Try
- K(K);N_SPINS(H),P-FLIGHT,P_SPINS(G),XP(i)
- Threat
- DUALS(4)
- Vars
- P(f);XR(F)::R(I)+S(H),XP(c)
- Q(h);::R(I)+S(H),DCHECK
- Refutation
- R(b);CHECK,XS(G)
- Try
- B(A);CHECK
- Vars
- K(d);N_SPINB(e),S_FLIGHT::QAR1(D)
- Refutation
- K(d);N_SPINB(e),P_SPINP(c),S_FLIGHT,XB(A)
- Try
- R(F);CHECK,XP(c)
- Vars
- K(d);N_PINS(H),N_SPINB(e),S_FLIGHT::B(A)
- Refutation
- R(b);XR(F)
- Try
- R(F);N_SPINS(H)
- Threat
- R(I)+S(H),XP(c)
- Vars
- K(d);N_SPINB(e),S_FLIGHT,XR(F)::B(A)
- Q(h);N_GUARD,P_PINP(L)::QAR2(D),XB(e)
- P(c);::R(I)+S(H)
- Refutation
- P(c);XP(C)
- Try
- R(F);N_SPINS(H)
- Threat
- R(I)+S(H),XP(c)
- Vars
- K(d);N_SPINB(e),S_FLIGHT::B(A)
- P(c);XP(C)::R(I)+S(H)
- Q(h);N_GUARD,P_PINP(L)::QAR2(D),XB(e)
- Q(h);N_GUARD::QAR2(D),XB(e)
- P(c);::R(I)+S(H)
- P(g);SBLOCK::R(I)+S(H),DCHECK
- Refutation
- Q(h);
- Try
- Q(D);N_PINB(e),XP(g)
- Threat
- DUALS(3)
- Vars
- B(e);CHECK,OGATE,P_SPINB(e),XS(H)::R(I),XB(e)
- B(e);N_GUARD,N_PINS(H),XB(A)::QAB1(D)
- Q(h);::QAR1(D)
- Refutation
- Q(h);XQ(D)
- Try
- Actual
- S(G);N_SPINS(H)
- Threat
- R(I)+S(H)
- Vars
- K(d);N_SPINB(e),S_FLIGHT,XR(F)::S(H)
- P(f);SBLOCK,XR(F)::R(I)+S(H),XP(c)
- Q(h);N_GUARD::S(G),XP(g)
- Q(h);N_GUARD,P_PINP(L)::S(G),XP(g)
- P(g);N_GUARD::R1(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).