MESON Chess Problem Database

Problem Display
PID: 124305 (4Kb2/3p1N2/4kp2/5b1B/8/8/6Q1/8 w - - 0 1)

Legentil, Georges

Le Havre Eclair, 1933

(First published on Sun Nov 5 1933)

4Kb2/3p1N2/4kp2/5b1B/8/8/6Q1/8

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qe4#
    • 1...Bd6
      • 2.Qa2#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qxd7#
      • 1...Bd6
        • 2.Qb3#
      • 1...d5
        • 2.Qc8#
        • 2.Qd7#
      • 1...d6!
    • 1.Qe2+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd5!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Qe4#
      • 1...Bd6
        • 2.Qa2#
      • 1...d5
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAR2(A)
    • B(a);N_GUARD::QAR2(A),XB(a)
    • B(e);S_CUTP(d)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(d)
      • Vars
        • B(e);S_CUTP(d)::QAB(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(A),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);P_PINB(a)
    • Threat
      • QAR2(A)
    • Vars
      • B(e);S_CUTP(d)::QAB(A)
      • P(d);SBLOCK::QAR(A)
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