MESON Chess Problem Database

Problem Display
PID: 30946 (7n/8/8/2R5/3k1p2/3N4/b2K4/7Q w - - 0 1)

de Val, Leon

Judex-Grand, 1945

7n/8/8/2R5/3k1p2/3N4/b2K4/7Q

#2

4 + 4

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1947

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...f3
      • 2.Qh4#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rxf4#
      • 1...Kc4
        • 2.Qd5#
      • 1...f3
        • 2.Qh4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sg6!
    • 1.Qf3?
      • threat
        • 2.Qxf4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sg6!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...f3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR1(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • P(c);OGATEB::QAR(A)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
        • P(c);OGATEB::QAR(A)
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • S(d);
  • Actual
    • R(D);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAB1(A)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • P(c);OGATEB::QAR(A)
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