MESON Chess Problem Database

Problem Display
PID: 197824 (2B5/8/7r/1P1k3p/8/BK3P2/2N2b1Q/3n4 w - - 0 1)

Clutsam, George Howard

The Observer, 1944

(First published on Sun Apr 9 1944)

2B5/8/7r/1P1k3p/8/BK3P2/2N2b1Q/3n4

#2

7 + 5

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qxh5#
    • 1...Rb6
      • 2.Qxh5#
    • 1...Rc6
      • 2.Qxh5#
    • 1...Rd6
      • 2.Qxd6#
      • 2.Qxh5#
    • 1...Rh7
      • 2.Qd6#
    • 1...Rh8
      • 2.Qd6#
  • Tries
    • 1.Bb7+?
      • 1...Rc6
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qe5#
      • 1...Rxd6
        • 2.Qxh5#
      • 1...Bg3
        • 2.Qd2#
      • 1...Re6
        • 2.Bb7#
      • 1...Bd4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD::QAR(B),XP(d)
    • R(e);N_GUARD,P_PINP(F)::QAR(B),XP(d)
    • R(e);N_GUARD::QAR1(B)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • R(e);P_SPINR(e)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • R(e);N_GUARD,SBLOCK,XB(C)::QAR(B),XP(d)
      • B(b);OGATE::QAR(B)
      • R(e);SBLOCK::B(G)
      • B(b);SBLOCK::S(A)
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