MESON Chess Problem Database

Problem Display
PID: 195261 (8/3p4/p3b3/r2k4/P3R3/Q1p1B3/K5B1/8 w - - 0 1)

Goulty, Allison Howard

The Observer, 1941

(First published on Sun Nov 9 1941)

8/3p4/p3b3/r2k4/P3R3/Q1p1B3/K5B1/8

#2

6 + 6

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6+
      • 2.Rc4#
    • 1...Rc5
      • 2.Qxc5#
  • Tries
    • 1.Re5+?
      • 1...Kc4
        • 2.Bf1#
      • 1...Kxe5+!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qd6#
      • 1...Kc6+
        • 2.Rxe6#
      • 1...Rxa4
        • 2.Rxa4#
      • 1...Rc5
        • 2.Rb4#
      • 1...d6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);CHECK,S_FLIGHT::B(B)+R(F),DCHECK
    • R(b);N_GUARD::QAR1(C),XR(b)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);CHECK,P-FLIGHT,XR(F)
  • Actual
    • B(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);CHECK,S_FLIGHT::B(B)+R(F),DCHECK,XB(e)
      • R(b);OGATE,P_PINQ(C),XP(E)::B(B)+R(F),XR(b)
      • R(b);SBLOCK::B(B)+R(F)
      • P(f);::QAR1(C),XP(f)
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