MESON Chess Problem Database

Problem Display
PID: 1102 (8/8/b1R3K1/Q1p3p1/N1r1k1r1/p2NPp2/B2B1R2/8 w - - 0 1)

Dale, CWM

The Westminster Papers, 1873

8/8/b1R3K1/Q1p3p1/N1r1k1r1/p2NPp2/B2B1R2/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Saxc5#
    • 1...Rd4
      • 2.Saxc5#
  • Tries
    • 1.Sc3+?
      • 1...Kxd3
        • 2.Bb1#
      • 1...Rxc3!
    • 1.Bxc4?
      • threat
        • 2.Sc3#
        • 2.Saxc5#
        • 2.Re6#
      • 1...Bc8
        • 2.Sc3#
        • 2.Saxc5#
      • 1...Bxc4!
    • 1.Qd8?
      • threat
        • 2.Re6#
      • 1...Rd4
        • 2.Saxc5#
      • 1...Bc8!
  • Keys
    • 1.Qxa6!
      • threat
        • 2.Qxc4#
      • 1...Kxd3
        • 2.Bb1#
      • 1...Kd5
        • 2.Sc3#
      • 1...Rxa4
        • 2.Re6#
      • 1...Rc1
        • 2.Re6#
      • 1...Rc2
        • 2.Re6#
      • 1...Rc3
        • 2.Sxc3#
        • 2.Re6#
      • 1...Rb4
        • 2.Sc3#
        • 2.Saxc5#
        • 2.Re6#
      • 1...Rd4
        • 2.Sc3#
        • 2.Saxc5#
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::S(F),XP(f)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(D)::B(A)
      • Refutation
        • R(c);XS(F)
    • Try
      • B(A);XR(c)
      • Threat
        • DUALS(3)
      • Refutation
        • B(h);XB(A)
    • Try
      • Q(G);
      • Threat
        • R(H)
      • Vars
        • R(c);N_GUARD::S(F),XP(f)
      • Refutation
        • B(h);
  • Actual
    • Q(G);XB(h)
    • Threat
      • QAR2(G),XR(c)
    • Vars
      • K(d);OGATEB,P_SPINR(c),S_FLIGHT,XS(D)::B(A)
      • K(d);P_SPINR(c),S_FLIGHT::S(F)
      • R(c);XS(F)::R(H)
      • R(c);::R(H)
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