MESON Chess Problem Database

Problem Display
PID: 148699 (8/1p6/pr5b/2kPP3/1p1R1P2/1p2B3/3P2QK/3r1B2 w - - 0 1)

Dawson, Thomas Rayner

Pittsburgh Leader, 1913

(First published on Sun Aug 17 1913)

8/1p6/pr5b/2kPP3/1p1R1P2/1p2B3/3P2QK/3r1B2

#2

9 + 8

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Rxd2#
    • 1...Rb5
      • 2.Rc4#
    • 1...Bxf4+
      • 2.Rxf4#
  • Tries
    • 1.Rd3+?
      • 1...Kc4
        • 2.Rc3#
      • 1...Kb5!
  • Keys
    • 1.d6!
      • threat
        • 2.Qd5#
      • 1...Bxf4+
        • 2.Rxf4#
      • 1...Rxd2
        • 2.Rxd2#
      • 1...Rxd6
        • 2.Rxd6#
      • 1...Rb5
        • 2.Rc4#
      • 1...Rc6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,P_PINQ(C),XP(B)::B(E)+R(F),XR(a)
    • R(f);SBLOCK::B(E)+R(F),DCHECK
    • B(g);CHECK,OGATE,XP(G)::B(E)+R(F),XB(g)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P-FLIGHT::B(A)+R(F),DCHECK
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • P(H);
    • Threat
      • QAR1(C)
    • Vars
      • B(g);CHECK,OGATE,XP(G)::B(E)+R(F),XB(g)
      • R(a);OGATE,P_PINQ(C),XP(B)::B(E)+R(F),XR(a)
      • R(f);OGATE,XP(H)::B(E)+R(F),XR(f)
      • R(f);SBLOCK::B(E)+R(F),DCHECK
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