MESON Chess Problem Database

Problem Display
PID: 179550 (4b3/2n5/1qp5/bpkP1R2/2N1R3/p1B5/2Q1B3/6K1 w - - 0 1)

Savournin, Jacques

diagrammes, 1974

4b3/2n5/1qp5/bpkP1R2/2N1R3/p1B5/2Q1B3/6K1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Bd4#
    • 1...Sa6
      • 2.d6#
    • 1...Se6
      • 2.dxe6#
      • 2.d6#
    • 1...Sa8
      • 2.d6#
  • Tries
    • 1.Bb4+?
      • 1...Kxb4+
        • 2.Sxb6#
      • 1...Bxb4!
  • Keys
    • 1.Be5!
      • threat
        • 2.Bd6#
      • 1...Kb4+
        • 2.Sxb6#
      • 1...Kxd5+
        • 2.Bd4#
      • 1...bxc4
        • 2.Qxc4#
      • 1...cxd5
        • 2.Sxa5#
      • 1...b4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(b);SBLOCK::B(D)
    • S(g);N_GUARD::R(H)+P(G)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(d);CHECK,S_FLIGHT,XB(D)::R(F)+S(E),XQ(e)
      • Refutation
        • B(b);XB(D)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • K(d);CHECK,S_FLIGHT::R(F)+S(E),XQ(e)
      • K(d);CHECK,P-FLIGHT,XP(G)::R(H)+B(D)
      • P(c);OGATE,P_SPINP(c),XS(E)::QAR1(B),XP(c)
      • P(f);SBLOCK,XP(G)::QAR(B)+S(E),XB(b)
      • P(c);S_CUTB(b)::QAR(B)+S(E)
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