MESON Chess Problem Database

Problem Display
PID: 143431 (3K2Bb/6B1/3RN1kp/Q3p1P1/3P3P/4N3/8/6R1 w - - 0 1)

Anonymous

Hackney Mercury, 1894

3K2Bb/6B1/3RN1kp/Q3p1P1/3P3P/4N3/8/6R1

#2

11 + 4

15 British Chess Magazine 1894

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg7
      • 2.Sf4#
    • 1...exd4
      • 2.gxh6#
    • 1...e4
      • 2.gxh6#
    • 1...hxg5
      • 2.Rxg5#
  • Tries
    • 1.Sc5+?
      • 1...Kh5
        • 2.Rxh6#
      • 1...Kxg7!
    • 1.Sc7+?
      • 1...Kh5
        • 2.Rxh6#
      • 1...Kxg7!
    • 1.Sf8+?
      • 1...Kh5
        • 2.Rxh6#
      • 1...Kxg7!
    • 1.Bf7+?
      • 1...Kh7
        • 2.g6#
      • 1...Kxf7!
    • 1.Rh1?
      • threat
        • 2.h5#
      • 1...Kh5
        • 2.Bf7#
      • 1...h5!
    • 1.Rg4?
      • 1...Kh5
        • 2.Bf7#
      • 1...Bxg7
        • 2.Sf4#
      • 1...exd4
        • 2.gxh6#
      • 1...hxg5
        • 2.Rxg5#
      • 1...e4
        • 2.gxh6#
      • 1...h5!
    • 1.Qd5?
      • 1...Bxg7
        • 2.Sf4#
      • 1...exd4
        • 2.gxh6#
      • 1...hxg5
        • 2.Rxg5#
      • 1...h5
        • 2.Qe4#
      • 1...e4
        • 2.gxh6#
      • 1...Kh5!
    • 1.Qxe5?
      • threat
        • 2.Sf4#
        • 2.gxh6#
      • 1...Bxg7
        • 2.Sf4#
        • 2.Sxg7#
      • 1...hxg5
        • 2.Sf4#
        • 2.Rxg5#
        • 2.Qxg5#
      • 1...h5
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sc7#
        • 2.Sf8#
        • 2.Qf6#
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kh5!
  • Keys
    • 1.Sf5!
      • 1...Kxf5
        • 2.Bh7#
      • 1...Kh5
        • 2.Bf7#
      • 1...Bxg7
        • 2.Sexg7#
      • 1...exd4
        • 2.Sf4#
      • 1...hxg5
        • 2.Rxg5#
      • 1...h5
        • 2.Se7#
      • 1...e4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK,XB(I)::R(G)+S(H),DCHECK
    • P(a);XP(C)::R(A)+P(F),XP(c)
    • P(a);::R(A)+P(F),XP(c)
    • P(c);OGATE,P_SPINP(c),XP(F)::R1(A),XP(c)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(G),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(I)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(G),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(I)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(G),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(I)
    • Try
      • B(K);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P(F)
      • Refutation
        • K(b);S_FLIGHT,XB(K)
    • Try
      • R(A);
      • Threat
        • P(D)
      • Vars
        • K(b);S_FLIGHT::B(K)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • K(b);S_FLIGHT::B(K)
        • B(d);SBLOCK,XB(I)::R(G)+S(H),DCHECK
        • P(a);XP(C)::R(A)+P(F),XP(c)
        • P(c);OGATE,P_SPINP(c),XP(F)::R1(A),XP(c)
        • P(a);::R(A)+P(F),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(E);
      • Vars
        • B(d);SBLOCK,XB(I)::R(G)+S(H),DCHECK
        • P(a);XP(C)::R(A)+P(F),XP(c)
        • P(c);OGATE,P_SPINP(c),XP(F)::R1(A),XP(c)
        • P(c);SBLOCK::QAB(E)
        • P(a);::R(A)+P(F),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);XP(a)
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XS(B)::B(K)
      • K(b);S_FLIGHT::B(K)
      • B(d);XB(I)::R(G)+S(H),XB(d)
      • P(a);XP(C)::R(G)+S(H),DCHECK
      • P(c);OGATE,P_SPINP(c),XP(F)::R1(A),XP(c)
      • P(c);SBLOCK::S(B)
      • P(a);::R(G)+S(H),DCHECK
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