MESON Chess Problem Database

Problem Display
PID: 227998 (8/3p3Q/3B3n/1P2NNR1/3pk1P1/8/BP6/4K3 w - - 0 1)

Gunning, H

Sunday Chronicle, 1947

(First published on Sun Jun 8 1947)

8/3p3Q/3B3n/1P2NNR1/3pk1P1/8/BP6/4K3

#2

10 + 4

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg4
      • 2.Rxg4#
  • Tries
    • 1.Sg3+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kf4!
    • 1.Bd5+?
      • 1...Kf4
        • 2.Sf3#
        • 2.Sf7#
      • 1...Kxd5!
  • Keys
    • 1.Sc4!
      • 1...Kd3
        • 2.Sxh6#
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5
        • 2.Sd2#
      • 1...Sxg4
        • 2.Sh4#
      • 1...Sxf5
        • 2.Qxf5#
      • 1...Sf7
        • 2.Sh4#
      • 1...Sg8
        • 2.Sh4#
      • 1...d3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,XP(D)::R(H),XS(c)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(J)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XB(B)
  • Actual
    • S(F);
    • Vars
      • K(b);S_FLIGHT::QAB(J)+S(G),XS(c)
      • K(b);S_FLIGHT::S(G)
      • K(b);S_FLIGHT::B(B)+S(F)
      • S(c);N_GUARD,XP(D)::QAB(J)+S(G)
      • S(c);OGATE,P_SPINS(c),XS(G)::QAB1(J),XS(c)
      • S(c);N_GUARD::QAB(J)+S(G)
      • P(a);SBLOCK::S(F)
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