MESON Chess Problem Database

Problem Display
PID: 203450 (1n2R3/1BP1r1rQ/2P1P1P1/6K1/2PpkP1R/2p1bN2/4Pp2/3N4 w - - 0 1)

Millins, Edward

Chess Problem Science, 1924

1n2R3/1BP1r1rQ/2P1P1P1/6K1/2PpkP1R/2p1bN2/4Pp2/3N4

#2

14 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Rxe6#
    • 1...Ref7
      • 2.exf7#
    • 1...Rxg6+
      • 2.Qxg6#
    • 1...Rgf7
      • 2.gxf7#
    • 1...Rg8
      • 2.g7#
    • 1...Bxf4+
      • 2.Rxf4#
    • 1...Sxc6
      • 2.Bxc6#
    • 1...Sd7
      • 2.cxd7#
    • 1...d3
      • 2.Sxc3#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Sg5#
      • 1...d3
        • 2.Sxc3#
      • 1...Bxf4!
    • 1.Qxg7?
      • threat
        • 2.Qe5#
      • 1...Bxf4+
        • 2.Rxf4#
      • 1...Rxe6
        • 2.Rxe6#
      • 1...Sd7
        • 2.cxd7#
      • 1...Rxg7!
    • 1.cxb8Q?
      • threat
        • 2.Qe5#
        • 2.c7#
      • 1...Rxg6+
        • 2.Qxg6#
      • 1...Bxf4+
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...Rxe6
        • 2.Rxe6#
        • 2.c7#
      • 1...Rxb7
        • 2.Qe5#
      • 1...Rd7
        • 2.Qe5#
        • 2.cxd7#
      • 1...Rc7!
    • 1.c8S?
      • threat
        • 2.Sd6#
      • 1...Rxg6+
        • 2.Qxg6#
      • 1...Bxf4+
        • 2.Rxf4#
      • 1...Rd7!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Sg5#
      • 1...Rxe6+
        • 2.Rxe6#
      • 1...Ref7+
        • 2.exf7#
      • 1...Rxg6+
        • 2.Qxg6#
      • 1...Rgf7+
        • 2.gxf7#
      • 1...Sd7+
        • 2.cxd7#
      • 1...d3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(f);OGATE,P_SPINR(f),XP(I)::R(N),XR(f)
    • R(f);OGATE::R(N)+P(I),XR(f)
    • R(g);CHECK,OGATE,P_SPINR(g),XP(J)::QAB(M),XR(g)
    • R(g);OGATE::QAB(M)+P(J),XR(g)
    • R(g);OGATE::QAB(M)+P(J)
    • B(c);CHECK,OGATE,P_PINP(J),P_SPINB(c),XP(E)::R1(F),XB(c)
    • S(h);OGATE,P_SPINS(h),XP(H)::B(K),XS(h)
    • S(h);OGATE::B(K)+P(H),XS(h)
    • P(d);N_GUARD::S(A),XP(b)
  • Tries
    • Try
      • K(G);N_SPINP(E),P-FLIGHT,P_SPINP(J)
      • Threat
        • S(C)
      • Vars
        • P(d);N_GUARD::S(A),XP(b)
      • Refutation
        • B(c);XP(E)
    • Try
      • Q(M);XR(g)
      • Threat
        • QAR1(M)
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XP(E)::R1(F),XB(c)
        • R(f);OGATE,P_SPINR(f),XP(I)::R(N),XR(f)
        • S(h);OGATE::B(K)+P(H),XS(h)
      • Refutation
        • R(f);XQ(M)
    • Try
      • P(L);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XP(J)::QAB(M),XR(g)
        • R(f);XB(K)::QAR1(L)
      • Refutation
        • R(f);
    • Try
      • P(L);
      • Threat
        • S(L)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XP(J)::QAB(M),XR(g)
        • B(c);CHECK,OGATE,P_PINP(J),P_SPINB(c),XP(E)::R1(F),XB(c)
      • Refutation
        • R(f);
  • Actual
    • K(G);N_SPINP(E),S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • R(f);CHECK,OGATE,P_SPINR(f),XP(I)::R(N),XR(f)
      • R(f);CHECK,OGATE::R(N)+P(I),XR(f)
      • R(g);CHECK,OGATE,P_SPINR(g),XP(J)::QAB(M),XR(g)
      • R(g);CHECK,OGATE::QAB(M)+P(J),XR(g)
      • S(h);CHECK,OGATE::B(K)+P(H),XS(h)
      • P(d);N_GUARD::S(A),XP(b)
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