MESON Chess Problem Database

Problem Display
PID: 148943 (5K2/2p5/2p5/2kpp3/2PN2Q1/6B1/1R6/2R5 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1902

5K2/2p5/2p5/2kpp3/2PN2Q1/6B1/1R6/2R5

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.c5#
    • 1...e4
      • 2.Se6#
  • Tries
    • 1.Rb5+?
      • 1...Kd6
        • 2.Qe6#
        • 2.c5#
      • 1...cxb5!
    • 1.Qe2?
      • 1...Kxd4
        • 2.Bf2#
      • 1...dxc4
        • 2.Qxe5#
      • 1...exd4
        • 2.Qe7#
      • 1...e4
        • 2.Se6#
      • 1...Kd6!
    • 1.Qd7?
      • threat
        • 2.Se6#
      • 1...exd4
        • 2.Qe7#
        • 2.cxd5#
      • 1...Kxd4!
    • 1.Qh4?
      • 1...Kd6
        • 2.Qe7#
      • 1...exd4
        • 2.Qe7#
      • 1...e4
        • 2.Se6#
      • 1...dxc4!
    • 1.Qg5?
      • 1...Kd6
        • 2.Qe7#
      • 1...dxc4
        • 2.Qxe5#
      • 1...exd4
        • 2.Qe7#
        • 2.cxd5#
      • 1...e4
        • 2.Se6#
      • 1...Kxd4!
    • 1.Qg7?
      • 1...Kd6
        • 2.Qe7#
        • 2.c5#
      • 1...dxc4
        • 2.Qxe5#
      • 1...exd4
        • 2.Qe7#
      • 1...e4
        • 2.Se6#
      • 1...Kxd4!
    • 1.cxd5+?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxd5!
  • Keys
    • 1.Qf5!
      • 1...Kxd4
        • 2.Bf2#
      • 1...Kd6
        • 2.c5#
      • 1...dxc4
        • 2.Qxe5#
      • 1...exd4
        • 2.cxd5#
      • 1...e4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATE,P_SPINP(c),S_FLIGHT::P(D)
    • P(c);::S(E)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • P(d);XR(B)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::B(C)
        • P(b);OGATEB,P_SPINP(b),XP(D)::QAR2(F),XP(c)
        • P(c);OGATE,SBLOCK,XS(E)::QAB(F)
        • P(c);::S(E)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • S(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(E)
    • Try
      • Q(F);
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT::QAB1(F)
        • P(c);SBLOCK,XS(E)::QAB(F)
        • P(c);::S(E)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • Q(F);
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT::QAB1(F)
        • P(b);OGATEB,P_SPINP(b),XP(D)::QAR2(F),XP(c)
        • P(c);P_SPINP(b)::S(E)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(F);
      • Vars
        • P(b);OGATEB,P_SPINP(b),XP(D)::QAR2(F),XP(c)
        • P(c);SBLOCK,XS(E)::QAB(F)
        • P(c);::S(E)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT,XS(E)
    • Try
      • P(D);CHECK,XP(b)
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
  • Actual
    • Q(F);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(E)::B(C)
      • K(a);OGATE,P_SPINP(c),S_FLIGHT::P(D)
      • P(b);OGATEB,P_SPINP(b),XP(D)::QAR2(F),XP(c)
      • P(c);P_SPINP(b),SBLOCK,XS(E)::R(A)+P(D),XP(b)
      • P(c);P_SPINP(b)::S(E)
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