MESON Chess Problem Database

Problem Display
PID: 43975 (8/q7/1pB5/PR1p1P2/k7/2rPN3/2P2K2/2BQ4 w - - 0 1)

Kipping, Cyril Stanley

Chess Amateur (The), 1912

8/q7/1pB5/PR1p1P2/k7/2rPN3/2P2K2/2BQ4

#2

10 + 5

4792 300 Chess Problems 1916

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2+
      • 2.Qxc2#
    • 1...Rb3
      • 2.cxb3#
    • 1...Rxd3
      • 2.cxd3#
    • 1...Rc4
      • 2.c3#
    • 1...Rc5
      • 2.c3#
      • 2.c4#
    • 1...Rxc6
      • 2.c4#
  • Tries
    • 1.Rb4+?
      • 1...Kxa5
        • 2.Ra4#
      • 1...Kxb4!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sxc3#
      • 1...Rxc2+
        • 2.Qxc2#
      • 1...bxa5+
        • 2.Rc5#
      • 1...Qxa5
        • 2.Rb4#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Rxc6
        • 2.c4#
      • 1...Qg7
        • 2.Sxb6#
      • 1...Ra3
        • 2.Qg4#
      • 1...Rb3
        • 2.cxb3#
      • 1...Rc4
        • 2.c3#
      • 1...Rc5
        • 2.c3#
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::QAB(B),XR(a)
    • R(a);OGATE::P(C),XR(a)
    • R(a);OGATE,XP(E)::QAB(B)+P(C),XR(a)
    • R(a);OGATE::QAB(B)+P(C)
    • R(a);OGATE,XB(J)::QAB(B)+P(C)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(G)::R1(H)
      • Refutation
        • K(b);P-FLIGHT,XR(H)
  • Actual
    • S(F);XP(c)
    • Threat
      • S(F),XR(a)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::QAB(B),XR(a)
      • P(d);CHECK,N_GUARD,XP(G)::B(J)+R(H)
      • Q(e);SBLOCK,XP(G)::B(J)+R(H),DCHECK
      • R(a);OGATE,XP(E)::QAB(B)+P(C),XR(a)
      • R(a);OGATE,XB(J)::QAB(B)+P(C)
      • Q(e);N_GUARD::S(F),XP(d)
      • R(a);N_GUARD::QAR(B)
      • R(a);OGATE::P(C),XR(a)
      • R(a);OGATE::QAB(B)+P(C)
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