MESON Chess Problem Database

Problem Display
PID: 70256 (8/8/B1p1p3/2PbP3/2p1R2Q/1prkN3/1RpNp3/2B1n2K w - - 0 1)

Caine, Walter Edmund

Chess, 1950

8/8/B1p1p3/2PbP3/2p1R2Q/1prkN3/1RpNp3/2B1n2K

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4+
      • 2.Qxe4#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Sxe1#
        • 2.Sf4#
        • 2.Re3#
        • 2.Rd4#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sf3
        • 2.Sf4#
        • 2.Re3#
      • 1...Sxg2!
    • 1.Sf5?
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Sg2
        • 2.Rd4#
      • 1...Sf3
        • 2.Re3#
      • 1...exf5!
    • 1.Qf4?
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Sg2
        • 2.Rd4#
      • 1...Sf3!
  • Keys
    • 1.Sexc4!
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Rxc4
        • 2.Rxb3#
      • 1...Bxc4
        • 2.Qd8#
      • 1...Sg2
        • 2.Rd4#
      • 1...Sf3
        • 2.Re3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(h);CHECK,OGATE,XR(F)::QAB1(G),XB(h)
  • Tries
    • Try
      • S(E);N_SPINR(F)
      • Threat
        • DUALS(4)
      • Vars
        • B(h);OGATE,P_PINS(E),XR(F)::QAB1(G),XB(h)
      • Refutation
        • S(a);XS(E)
    • Try
      • S(E);
      • Vars
        • B(h);CHECK,OGATE,XR(F)::QAB1(G),XB(h)
        • S(a);N_PINR(F)::R1(F)
      • Refutation
        • P(j);XS(E)
    • Try
      • Q(G);
      • Vars
        • B(h);CHECK,OGATE,XR(F)::QAB1(G),XB(h)
        • S(a);N_PINR(F)::R1(F)
      • Refutation
        • S(a);N_PINR(F)
  • Actual
    • S(E);XP(g)
    • Vars
      • B(h);CHECK,OGATE,XR(F)::QAB1(G),XB(h)
      • R(e);OGATEB,P_SPINR(e),XS(E)::R(C),XP(d)
      • B(h);N_PINR(F),OGATEB,P_SPINB(h),XS(E)::QAR(G)
      • S(a);N_PINR(F)::R1(F)
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