MESON Chess Problem Database

Problem Display
PID: 229190 (r6B/P6Q/8/8/8/8/krB3RK/1N6 w - - 0 1)

Kipping, Cyril Stanley

Magyar Sakkvilag, 1926

r6B/P6Q/8/8/8/8/krB3RK/1N6

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Qxc2#
    • 1...Rxa7
      • 2.Qxa7#
  • Tries
    • 1.Bb3+?
      • 1...Ka1
        • 2.Bxb2#
      • 1...Kxb3!
    • 1.Qf7+?
      • 1...Rb3
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
        • 2.Qxb3#
      • 1...Ka1!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Ra3#
      • 1...Rxc2+
        • 2.Qxc2#
      • 1...Ka1
        • 2.Ra3#
      • 1...Rxb1
        • 2.Bxb1#
      • 1...Rxa7
        • 2.Qxa7#
      • 1...Rb3
        • 2.Bxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_PINR(C),P_SPINR(b),XB(B)::QAR2(F),XR(b)
    • R(c);OGATE,XP(E)::QAR(F),XR(c)
  • Tries
    • Try
      • B(B);CHECK,P_PINR(b),P_SPINR(C)
      • Vars
        • K(a);P-FLIGHT::B(G),XR(b)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT,XB(B)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINR(b)
  • Actual
    • R(C);P_SPINB(B)
    • Threat
      • R1(C)
    • Vars
      • R(b);CHECK,OGATE,XB(B)::QAR2(F),XR(b)
      • K(a);P-FLIGHT,P_SPINR(b)::R(C)
      • R(b);N_PINB(B),XS(A)::B(B),XR(b)
      • R(c);OGATE,XP(E)::QAR(F),XR(c)
      • R(b);N_PINB(B)::B(B),XR(b)
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