MESON Chess Problem Database

Problem Display
PID: 68372 (5r2/8/q7/BBn3p1/3p2Nb/3P1b1Q/R1P1k3/2K2NnR w - - 0 1)

Kipping, Cyril Stanley

Chess, 1949

5r2/8/q7/BBn3p1/3p2Nb/3P1b1Q/R1P1k3/2K2NnR

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxh1
      • 2.c4#
    • 1...Be4
      • 2.c4#
    • 1...Bxg4
      • 2.c4#
    • 1...Bd5
      • 2.c4#
    • 1...Bc6
      • 2.c4#
    • 1...Bb7
      • 2.c4#
    • 1...Ba8
      • 2.c4#
    • 1...Bg3
      • 2.Sxg3#
    • 1...Sb3+
      • 2.cxb3#
    • 1...Sxd3+
      • 2.cxd3#
  • Tries
    • 1.Rh2+?
      • 1...Bf2
        • 2.Sg3#
        • 2.Rxf2#
      • 1...Bg2!
    • 1.Qg2+?
      • 1...Bf2
        • 2.Sg3#
        • 2.Qxf2#
      • 1...Bxg2!
    • 1.Qh2+?
      • 1...Kxf1
        • 2.Rxg1#
      • 1...Bf2
        • 2.Sg3#
        • 2.Qxf2#
      • 1...Bg2!
  • Keys
    • 1.Sfh2!
      • threat
        • 2.Qf1#
      • 1...Sb3+
        • 2.cxb3#
      • 1...Sxd3+
        • 2.cxd3#
      • 1...Bxh1
        • 2.c4#
      • 1...Bxg4
        • 2.c4#
      • 1...Sxh3
        • 2.c3#
      • 1...Bg2
        • 2.c4#
      • 1...Be4
        • 2.c4#
      • 1...Bd5
        • 2.c4#
      • 1...Bc6
        • 2.c4#
      • 1...Bb7
        • 2.c4#
      • 1...Ba8
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(c);XR(C)::R(D)+P(E)
    • B(c);::R(D)+P(E)
    • B(c);XS(H)::R(D)+P(E)
    • B(e);N_GUARD::S(B),XB(e)
    • S(f);CHECK,OGATE::R(D)+P(E),XS(f)
    • S(f);CHECK,OGATE,P_SPINS(f),XP(F)::R(D)+P(E),XS(f)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(G);CHECK
      • Refutation
        • B(c);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XS(B)::R1(C),XS(a)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(B);
    • Threat
      • QAB1(G)
    • Vars
      • S(f);CHECK,OGATE::R(D)+P(E),XS(f)
      • S(f);CHECK,OGATE,P_SPINS(f),XP(F)::R(D)+P(E),XS(f)
      • B(c);XR(C)::R(D)+P(E)
      • B(c);XS(H)::R(D)+P(E)
      • S(a);XQ(G)::R(D)+P(E)
      • B(c);::R(D)+P(E)
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