MESON Chess Problem Database

Problem Display
PID: 184216 (1K6/3pb3/1pkpr1R1/1p6/2r1NN2/2Q5/6B1/8 w - - 0 1)

Gibbins, Norman Martin

The Observer, 1928

(First published on Sun Jan 29 1928)

1K6/3pb3/1pkpr1R1/1p6/2r1NN2/2Q5/6B1/8

#2

6 + 8

15239 Valois Notebooks 2018

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qxc4#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sb4#
      • 1...Kd5
        • 2.Sf6#
      • 1...Rxe4
        • 2.Bxe4#
      • 1...b4
        • 2.Qxc4#
      • 1...d5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR2(B),XR(a)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);N_SPINR(a),S_FLIGHT::B(A)+S(C),DCHECK
      • R(f);OGATE,P_SPINP(e),XS(C)::B(A),XR(f)
      • P(b);N_GUARD::QAR2(B),XR(a)
      • P(e);N_GUARD,SBLOCK,S_CUTR(f)::S(D)
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