MESON Chess Problem Database

Problem Display
PID: 153363 (1k2b3/4P3/Q2KP1p1/3P1P2/n1prP3/3p2B1/1bn5/1R6 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1946

1k2b3/4P3/Q2KP1p1/3P1P2/n1prP3/3p2B1/1bn5/1R6

#2

9 + 9

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5+
      • 2.Kxd5#
    • 1...Bc6
      • 2.Kxc6#
    • 1...Bd7
      • 2.Kxd7#
    • 1...Bf7
      • 2.Kc6#
      • 2.Kd7#
    • 1...Sc3
      • 2.Kc5#
    • 1...Sc5
      • 2.Kxc5#
    • 1...Sb6
      • 2.Kc5#
  • Tries
    • 1.Rxb2+?
      • 1...Bb5
        • 2.e8Q#
        • 2.e8R#
      • 1...Sxb2
        • 2.Kc5#
      • 1...Sb6
        • 2.Kc5#
        • 2.Rxb6#
      • 1...Sb4!
    • 1.Qa7+?
      • 1...Kc8
        • 2.Qc7#
        • 2.Qa8#
      • 1...Kxa7!
  • Keys
    • 1.Ke5!
      • threat
        • 2.Kf6#
      • 1...Rxe4+
        • 2.Kxe4#
      • 1...Rxd5+
        • 2.Kxd5#
      • 1...Kc7
        • 2.Kf6#
      • 1...gxf5
        • 2.Kxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(f);CHECK,XP(D)::B(B)+K(G),XR(f)
    • B(i);::B(B)+K(G),XB(i)
    • S(d);::B(B)+K(G)
    • S(d);::B(B)+K(G),XS(d)
    • S(d);N_SPINB(a)::B(B)+K(G)
  • Tries
    • Try
      • R(A);CHECK,XB(a)
      • Vars
        • B(i);OGATE,P_SPINB(i)::P=Q
        • S(d);XR(A)::B(B)+K(G)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(h);N_SPINB(a),S_FLIGHT,XQ(F)
  • Actual
    • K(G);N_SPINP(D),S_FLIGHT
    • Threat
      • B(B)+K(G)
    • Vars
      • R(f);CHECK,XP(C)::B(B)+K(G),XR(f)
      • R(f);CHECK,XP(D)::B(B)+K(G),XR(f)
      • K(h);N_SPINB(a),S_FLIGHT::B(B)+K(G)
      • P(g);XP(E)::B(B)+K(G),XP(g)
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