MESON Chess Problem Database

Problem Display
PID: 109521 (2K5/8/1p3p2/1Nbk1P2/P1Rn1PP1/3N1r2/P7/3QR2B w - - 0 1)

Thornton, George Howard

Buffalo Times, 1885

2K5/8/1p3p2/1Nbk1P2/P1Rn1PP1/3N1r2/P7/3QR2B

#2

12 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Sb4#
  • Tries
    • 1.Sb4+?
      • 1...Bxb4
        • 2.Qxd4#
      • 1...Kxc4!
    • 1.Rxd4+?
      • 1...Kc6
        • 2.Sa7#
        • 2.Bxf3#
        • 2.Qxf3#
      • 1...Bxd4!
  • Keys
    • 1.Re4!
      • 1...Kxc4
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qxf3#
      • 1...Kc6
        • 2.Sb4#
      • 1...Rxd3
        • 2.Rexd4#
      • 1...Rxf4
        • 2.Rexd4#
      • 1...Sxb5
        • 2.Sb4#
      • 1...Sxf5
        • 2.Sb4#
      • 1...Rf1
        • 2.Rexd4#
      • 1...Rf2
        • 2.Rexd4#
      • 1...Re3
        • 2.Rexd4#
      • 1...Rg3
        • 2.Rexd4#
      • 1...Rh3
        • 2.Rexd4#
      • 1...Ba3
        • 2.Rexd4#
      • 1...Bb4
        • 2.Rexd4#
      • 1...Bd6
        • 2.Rexd4#
      • 1...Be7
        • 2.Rexd4#
      • 1...Bf8
        • 2.Rexd4#
      • 1...Sc2
        • 2.Sb4#
      • 1...Se2
        • 2.Sb4#
      • 1...Sb3
        • 2.Sb4#
      • 1...Sc6
        • 2.Sb4#
      • 1...Se6
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINB(c),S_FLIGHT::S(E)
  • Tries
    • Try
      • S(E);CHECK,P_PINS(b)
      • Vars
        • B(c);XS(E)::QAR1(A),XS(b)
      • Refutation
        • K(d);N_SPINR(a),N_SPINS(b),S_FLIGHT,XR(G)
    • Try
      • R(G);CHECK,XS(b)
      • Refutation
        • B(c);XR(G)
  • Actual
    • R(B);N_PINR(a)
    • Vars
      • K(d);OGATEB,P_SPINS(b),S_FLIGHT,XR(G)::QAB1(A)
      • K(d);OGATEB,P_SPINR(a),P_SPINS(b),S_FLIGHT,XR(B)::QAB1(A),XR(a)
      • K(d);P_SPINB(c),S_FLIGHT::S(E)
      • R(a);XS(E)::B(C)+R(B),DCHECK,XS(b)
      • R(a);XP(H)::B(C)+R(B),DCHECK,XS(b)
      • S(b);XS(J)::QAR(A)+S(E),DCHECK
      • S(b);XP(K)::QAR(A)+S(E),DCHECK
      • R(a);::B(C)+R(B),DCHECK,XS(b)
      • B(c);N_GUARD::R1(B),XS(b)
      • S(b);::QAR(A)+S(E),DCHECK
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