MESON Chess Problem Database

Problem Display
PID: 63301 (8/3KNp2/2p4n/4k1r1/4pN2/2pR1Q2/4n3/B3R3 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1945

8/3KNp2/2p4n/4k1r1/4pN2/2pR1Q2/4n3/B3R3

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Bxc3#
    • 1...Sg1
      • 2.Bxc3#
    • 1...Sg3
      • 2.Bxc3#
    • 1...Sxf4
      • 2.Bxc3#
    • 1...exd3
      • 2.Bxc3#
  • Tries
    • 1.Sfg6+?
      • 1...fxg6
        • 2.Sxc6#
      • 1...Rxg6!
    • 1.Bxc3+?
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sxc3!
    • 1.Rd5+?
      • 1...Kf6
        • 2.Sh5#
      • 1...cxd5!
  • Keys
    • 1.Rxc3!
      • threat
        • 2.Rc5#
      • 1...Kd4
        • 2.Sxc6#
      • 1...Kf6
        • 2.Rxc6#
      • 1...Sxc3
        • 2.Bxc3#
      • 1...exf3
        • 2.Rc4#
      • 1...Sd4
        • 2.Sd3#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::B(A),XP(b)
    • S(a);N_GUARD,XS(E)::B(A),XP(b)
    • P(c);P_SPINS(a),XR(C)::B(A),XP(b)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • P(h);XS(E)::S(G),XP(f)
      • Refutation
        • R(e);XS(E)
    • Try
      • B(A);CHECK,XP(b)
      • Vars
        • S(a);N_GUARD,P_SPINP(c),P_SPINS(a)::B(A),XS(a)
      • Refutation
        • S(a);P_SPINP(c),XB(A)
    • Try
      • R(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR(D)+S(E),DCHECK
      • Refutation
        • P(f);XR(C)
  • Actual
    • R(C);XP(b)
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • K(d);S_FLIGHT::S(G),XP(f)
      • K(d);S_FLIGHT::B(A)+R(C),DCHECK,XP(f)
      • S(a);OGATE,P_SPINP(c),P_SPINS(a),XR(C)::B(A),XS(a)
      • P(c);P_SPINS(a),XQ(D)::B(A)+R(C)
      • S(a);P_SPINP(c),SBLOCK::S(E)
      • P(f);::B(A)+R(C),DCHECK,XP(f)
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