MESON Chess Problem Database

Problem Display
PID: 62149 (2r1k3/2nRNR1p/2Pb1rPP/1N1P2n1/8/5B2/5Q2/5K2 w - - 0 1)

Fairhall, GA

Chess, 1943

2r1k3/2nRNR1p/2Pb1rPP/1N1P2n1/8/5B2/5Q2/5K2

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Sxd6#
    • 1...Rf4
      • 2.Sxd6#
    • 1...Rf5
      • 2.Sxd6#
    • 1...Sge6
      • 2.Sxd6#
    • 1...Sce6
      • 2.Sxd6#
  • Tries
    • 1.Rf8+?
      • 1...Rxf8
        • 2.Sxd6#
      • 1...Kxf8!
  • Keys
    • 1.g7!
      • threat
        • 2.g8Q#
      • 1...Kxf7
        • 2.Bh5#
      • 1...Rxf7
        • 2.Sxd6#
      • 1...Bxe7
        • 2.Rfxe7#
      • 1...Sxf7
        • 2.g8Q#
        • 2.g8R#
      • 1...Rg6
        • 2.Rf8#
      • 1...Sge6
        • 2.Sxd6#
      • 1...Sce6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD,P_PINQ(B),XB(C)::S(D),XB(b)
    • R(c);N_GUARD::S(D),XB(b)
    • S(a);S_CUTR(c)::S(D),XB(b)
    • S(d);S_CUTR(c)::S(D),XB(b)
  • Tries
    • Try
      • R(K);CHECK
      • Vars
        • R(c);SBLOCK,XR(K)::S(D),XB(b)
      • Refutation
        • K(g);P-FLIGHT,XR(K)
  • Actual
    • P(G);
    • Threat
      • P=Q
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(K)::B(C)
      • R(c);N_GUARD,XR(K)::S(D),XB(b)
      • B(b);OGATE,XS(J)::R1(K),XB(b)
      • S(a);XR(K)::P=Q
      • R(c);N_GUARD::R1(K)
      • S(a);S_CUTR(c)::S(D),XB(b)
      • S(d);S_CUTR(c)::S(D),XB(b)
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