MESON Chess Problem Database
Problem Display
PID: 188540 (5N2/pR2p3/Qpknb2R/8/1P2PB2/8/8/1B2K3 w - - 0 1)
Keeney, Palmer Gunkel
To Alain White, 1945
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Sc4
- 2.Rc7#
- 1...Sxe4
- 2.Bxe4#
- 1...Sf5
- 2.Rc7#
- 1...Sf7
- 2.Rc7#
- 1...Sc8
- 2.Rc7#
- 1...Sc4
- Tries
- 1.Sxe6?
- threat
- 2.Sd4#
- 2.Sd8#
- 2.Rc7#
- 1...Sxe4
- 2.Bxe4#
- 1...Sb5
- 2.Sd4#
- 2.Sd8#
- 1...Se8
- 2.Sd4#
- 2.Sd8#
- 2.b5#
- 1...Sxb7!
- threat
- 1.Sg6?
- threat
- 2.Se5#
- 2.Sxe7#
- 1...Sxe4
- 2.Sxe7#
- 1...Sc4
- 2.Sxe7#
- 2.Rc7#
- 1...Sb5
- 2.Sxe7#
- 1...Sf5
- 2.Rc7#
- 1...Sf7
- 2.Sxe7#
- 2.Rc7#
- 1...Sc8
- 2.Rc7#
- 1...Se8
- 2.Sxe7#
- 1...Sxb7!
- threat
- 1.Sd7?
- threat
- 2.Se5#
- 2.Sb8#
- 1...Sxe4
- 2.Bxe4#
- 1...Sxb7
- 2.Sb8#
- 1...Sc4
- 2.Sb8#
- 2.Rc7#
- 2.b5#
- 1...Sb5
- 2.Sb8#
- 1...Sf5
- 2.Sb8#
- 2.Rc7#
- 2.b5#
- 1...Sf7
- 2.Sb8#
- 2.Rc7#
- 2.b5#
- 1...Sc8
- 2.Sb8#
- 2.Rc7#
- 2.b5#
- 1...Se8
- 2.Sb8#
- 2.b5#
- 1...Bxd7!
- threat
- 1.Bd3?
- 1...Sxe4
- 2.Bxe4#
- 1...Sxb7
- 2.Bb5#
- 2.Qb5#
- 1...Ba2
- 2.Bb5#
- 1...Bb3
- 2.Bb5#
- 1...Bh3
- 2.Bb5#
- 1...Bg4
- 2.Bb5#
- 1...Bd5
- 2.Bb5#
- 1...Bf5
- 2.Bb5#
- 1...Bd7
- 2.Bb5#
- 1...Bf7
- 2.Bb5#
- 1...Bc8
- 2.Bb5#
- 1...Bg8
- 2.Bb5#
- 1...Sc4
- 2.Rc7#
- 1...Sb5
- 2.Bxb5#
- 1...Sf5
- 2.Bb5#
- 2.Rc7#
- 1...Sf7
- 2.Bb5#
- 2.Rc7#
- 1...Sc8
- 2.Bb5#
- 2.Rc7#
- 1...Se8
- 2.Bb5#
- 1...Bc4!
- 1...Sxe4
- 1.Bxd6?
- 1...Kxd6
- 2.Rxe6#
- 1...Ba2
- 2.Rc7#
- 2.b5#
- 1...Bb3
- 2.Rc7#
- 2.b5#
- 1...Bh3
- 2.Rc7#
- 2.b5#
- 1...Bc4
- 2.Rc7#
- 1...Bg4
- 2.Rc7#
- 2.b5#
- 1...Bd5
- 2.Rc7#
- 2.b5#
- 1...Bf5
- 2.Rc7#
- 2.b5#
- 1...Bd7
- 2.Rc7#
- 2.b5#
- 1...Bf7
- 2.Rc7#
- 2.b5#
- 1...Bc8
- 2.Rc7#
- 2.b5#
- 1...Bg8
- 2.Rc7#
- 2.b5#
- 1...exd6!
- 1...Kxd6
- 1.Rh5?
- threat
- 2.Rc5#
- 1...Sxe4
- 2.Rc7#
- 2.b5#
- 1...Sxb7
- 2.Qb5#
- 2.b5#
- 1...Bd5
- 2.exd5#
- 1...Sf5
- 2.Rc7#
- 1...Bf5!
- threat
- 1.Rxe7?
- 1...Sxe4
- 2.Bxe4#
- 1...Ba2
- 2.Rxd6#
- 1...Bb3
- 2.Rxd6#
- 1...Bh3
- 2.Rxd6#
- 2.Qc4#
- 1...Bc4
- 2.Rxd6#
- 2.Qxc4#
- 1...Bg4
- 2.Rxd6#
- 2.Qc4#
- 1...Bd5
- 2.Rxd6#
- 1...Bf5
- 2.Rxd6#
- 2.Qc4#
- 1...Bf7
- 2.Rxd6#
- 1...Bc8
- 2.Rxd6#
- 2.Qc4#
- 1...Bg8
- 2.Rxd6#
- 1...Sc4
- 2.Rc7#
- 2.Qxc4#
- 1...Sb5
- 2.Qb7#
- 1...Sf5
- 2.Rc7#
- 2.Qc4#
- 1...Sb7
- 2.Rc7#
- 1...Sf7
- 2.Rc7#
- 2.Qc4#
- 1...Sc8
- 2.Rc7#
- 2.Qc4#
- 1...Se8
- 2.Qc4#
- 1...Bd7!
- 1...Sxe4
- 1.Qa4+?
- 1...Sb5
- 2.Rc7#
- 1...b5
- 2.Qa6#
- 1...Kxb7!
- 1...Sb5
- 1.Sxe6?
- Keys
- 1.Rb8!
- 1...Kc7
- 2.Qb7#
- 1...Sxe4
- 2.Bxe4#
- 1...Ba2
- 2.Rc8#
- 1...Bb3
- 2.Rc8#
- 1...Bh3
- 2.Qc4#
- 1...Bc4
- 2.Rc8#
- 2.Qxc4#
- 1...Bg4
- 2.Qc4#
- 1...Bd5
- 2.Rc8#
- 1...Bf5
- 2.Qc4#
- 1...Bd7
- 2.Qc4#
- 1...Bf7
- 2.Rc8#
- 1...Bc8
- 2.Rxc8#
- 2.Qc4#
- 1...Bg8
- 2.Rc8#
- 1...Sc4
- 2.Rc8#
- 2.Qxc4#
- 1...Sb5
- 2.Qb7#
- 1...Sf5
- 2.Rc8#
- 2.Qc4#
- 1...Sb7
- 2.Rc8#
- 1...Sf7
- 2.Rc8#
- 2.Qc4#
- 1...Sc8
- 2.Rxc8#
- 2.Qc4#
- 1...Se8
- 2.Qc4#
- 1...Kc7
- 1.Rb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 4
- Sets
- S(c);P_SPINB(d)::R1(H)
- S(c);OGATE,P_SPINB(d),XP(D)::B(A),XS(c)
- Tries
- Try
- S(I);XB(d)
- Threat
- DUALS(3)
- Vars
- S(c);OGATE,XP(D)::B(A),XS(c)
- Refutation
- S(c);XR(H)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- S(c);XP(D)::S(I),XP(f)
- S(c);::S(I),XP(f)
- S(c);::R1(H)
- Refutation
- S(c);XR(H)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE,P_SPINB(d),XP(D)::B(A),XS(c)
- S(c);P_SPINB(d),XR(H)::S(I)
- S(c);P_SPINB(d)::S(I)
- Refutation
- B(d);P_SPINS(c),XS(I)
- Try
- B(A);
- Vars
- S(c);OGATE,P_SPINB(d),XP(D)::B(A),XS(c)
- B(d);P_SPINS(c)::B(A)
- S(c);P_SPINB(d)::R1(H)
- S(c);N_GUARD,P_SPINB(d)::B(A),XS(c)
- S(c);N_GUARD,P_SPINB(d)::B(A)
- Refutation
- B(d);P_SPINS(c)
- Try
- B(E);XS(c)
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINB(d),XB(E)::R1(G),XB(d)
- B(d);::R1(H)
- Refutation
- P(f);XB(E)
- Try
- R(G);
- Threat
- R1(G)
- Vars
- B(d);OGATE::P(D),XB(d)
- S(c);::R1(H)
- Refutation
- B(d);
- Try
- R(H);XP(f)
- Vars
- S(c);OGATE,P_SPINB(d),XP(D)::B(A),XS(c)
- B(d);OGATE,P_SPINS(c)::R1(G),XS(c)
- S(c);N_GUARD,P_SPINB(d),SBLOCK::QAB1(F)
- S(c);P_SPINB(d)::R1(H)
- S(c);N_GUARD,P_SPINB(d)::QAR2(F)
- Refutation
- B(d);P_SPINS(c)
- Try
- Q(F);CHECK,N_PINP(a)
- Vars
- S(c);P_SPINB(d),P_SPINS(c)::R1(H)
- P(a);OGATEB,P_SPINP(a)::QAR2(F)
- Refutation
- K(b);S_FLIGHT,XR(H)
- Try
- Actual
- R(H);
- Vars
- K(b);N_SPINP(a),P-FLIGHT,P_SPINS(c)::QAR1(F)
- S(c);OGATE,P_SPINB(d),XP(D)::B(A),XS(c)
- B(d);N_GUARD,P_SPINS(c)::R(H)
- B(d);N_GUARD,P_SPINS(c)::QAR2(F)
- S(c);N_GUARD,P_SPINB(d),SBLOCK::QAB1(F)
- S(c);N_GUARD,P_SPINB(d)::R(H)
- S(c);N_GUARD,P_SPINB(d)::QAR2(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).