MESON Chess Problem Database

Problem Display
PID: 152709 (3b1k2/rp2R1NQ/r4p2/p1P3P1/b7/Bp6/8/4K3 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1943

3b1k2/rp2R1NQ/r4p2/p1P3P1/b7/Bp6/8/4K3

#2

7 + 9

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Re6+
      • 2.Sxe6#
    • 1...Bc6
      • 2.Se6#
    • 1...Bb6
      • 2.Se6#
    • 1...b6
      • 2.Se6#
  • Tries
    • 1.Re8+?
      • 1...Kf7
        • 2.g6#
      • 1...Bxe8!
    • 1.Qg8+?
      • 1...Kxe7
        • 2.c6#
      • 1...Kxg8!
    • 1.c6?
      • threat
        • 2.Se6#
        • 2.Qh8#
      • 1...Rxc6
        • 2.Qh8#
      • 1...Bxe7!
  • Keys
    • 1.g6!
      • threat
        • 2.Rf7#
      • 1...Re6+
        • 2.Sxe6#
      • 1...Kxe7
        • 2.c6#
      • 1...Bxe7
        • 2.Qh8#
      • 1...Be8
        • 2.Rxe8#
      • 1...b5
        • 2.Re8#
      • 1...b6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);CHECK,N_GUARD::S(F),XR(d)
    • B(b);S_CUTR(d)::S(F)
    • B(h);S_CUTR(d)::S(F)
    • P(g);S_CUTR(d)::S(F)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(i);P-FLIGHT::P(D)
      • Refutation
        • B(b);XR(E)
    • Try
      • Q(G);CHECK
      • Vars
        • K(i);S_FLIGHT,XR(E)::B(B)+P(C)
      • Refutation
        • K(i);P-FLIGHT,XQ(G)
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(C)::QAR2(G)
      • Refutation
        • B(h);P_SPINB(h),XR(E)
  • Actual
    • P(D);
    • Threat
      • R1(E)
    • Vars
      • R(d);CHECK,N_GUARD::S(F),XR(d)
      • K(i);S_FLIGHT,XR(E)::B(B)+P(C)
      • B(h);SBLOCK,XR(E)::QAR2(G)
      • B(b);N_GUARD::R1(E),XB(b)
      • P(g);S_CUTB(b)::R1(E)
      • P(g);S_CUTR(d)::S(F)
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