MESON Chess Problem Database

Problem Display
PID: 101647 (8/8/4nB2/2pN4/R2pk3/1Q1bN1K1/8/8 w - - 0 1)

Meyer, Laurent

diagrammes, 1990

8/8/4nB2/2pN4/R2pk3/1Q1bN1K1/8/8

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bc2
      • 2.Qxc2#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Qxd3#
      • 1...Bc4
        • 2.Qf3#
      • 1...c4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sd6#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Bxc4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATEB::QAB(A),XB(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT,XS(B)::QAB(A),XB(a)
        • B(a);N_SPINP(b),OGATE::QAB1(A)
      • Refutation
        • P(d);N_SPINP(b)
  • Actual
    • S(B);N_PINP(b)
    • Threat
      • S(B)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(c);S_FLIGHT::QAB(A),XB(a)
      • B(a);OGATE,XS(B)::QAB1(A)
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