MESON Chess Problem Database

Problem Display
PID: 141258 (5bB1/5n2/4kNpR/2p2N2/8/B1Q5/1K3R2/8 w - - 0 1)

Grunfeld, Max

La Settimana Enigmistica, 1932

(First published on Sat Sep 3 1932)

5bB1/5n2/4kNpR/2p2N2/8/B1Q5/1K3R2/8

#2

8 + 5

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qe1#
      • 2.Qe3#
  • Tries
    • 1.Qc4+?
      • 1...Ke5
        • 2.Sg4#
        • 2.Sd7#
      • 1...Kxf6!
  • Keys
    • 1.Qg3!
      • 1...Kxf6
        • 2.Rxg6#
      • 1...Bxh6
        • 2.Qd6#
      • 1...gxf5
        • 2.Re2#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Be7
        • 2.Sg7#
      • 1...Bg7
        • 2.Qd6#
      • 1...c4
        • 2.Sd4#
      • 1...g5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);N_SPINS(d),P-FLIGHT,P_SPINP(c),XS(F)
  • Actual
    • Q(D);
    • Vars
      • K(b);N_SPINS(d),OGATEB,P-FLIGHT,P_SPINP(c),XS(F)::R1(G),XP(c)
      • B(e);N_GUARD,XR(G)::QAR1(D)
      • P(c);SBLOCK,XS(E)::R(B)
      • B(e);N_GUARD::QAR1(D),XB(e)
      • B(e);N_GUARD,SBLOCK::S(E)
      • B(e);N_GUARD,P_PINS(F)::QAR1(D)
      • P(a);N_GUARD::S(E)
      • P(c);::QAR(D)
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