MESON Chess Problem Database

Problem Display
PID: 120987 (8/4Qp2/3p1Ppp/3P1PkP/8/6NK/6B1/5NR1 w - - 0 1)

Simonet, Andre

Die Schwalbe, 1990

8/4Qp2/3p1Ppp/3P1PkP/8/6NK/6B1/5NR1

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe3#
  • Tries
    • 1.Bf3?
      • 1...Kf4
        • 2.Qe3#
      • 1...gxf5
        • 2.Se2#
      • 1...gxh5!
    • 1.Be4?
      • 1...Kf4
        • 2.Se2#
      • 1...gxh5
        • 2.Se2#
      • 1...gxf5!
    • 1.Qe5?
      • 1...gxf5
        • 2.Qxf5#
      • 1...gxh5
        • 2.Se4#
      • 1...dxe5!
    • 1.fxg6?
      • 1...Kf4
        • 2.Qe3#
      • 1...fxg6!
  • Keys
    • 1.Se2!
      • 1...Kxf5
        • 2.Be4#
      • 1...Kxh5
        • 2.Bf3#
      • 1...gxf5
        • 2.Bf3#
      • 1...gxh5
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(J)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(J)
        • P(c);SBLOCK,XP(G)::R(B)+S(D)
      • Refutation
        • P(c);XP(H)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::S(D)
        • P(c);SBLOCK,XP(H)::R(B)+S(D)
      • Refutation
        • P(c);XP(G)
    • Try
      • Q(J);
      • Vars
        • P(c);OGATE,P_SPINP(c),XP(G)::QAR1(J),XP(c)
        • P(c);SBLOCK,XP(H)::S(D)
      • Refutation
        • P(b);XQ(J)
    • Try
      • P(G);XP(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(J)
      • Refutation
        • P(e);XP(G)
  • Actual
    • S(D);
    • Vars
      • K(a);P-FLIGHT,XP(G)::B(C)
      • K(a);P-FLIGHT,XP(H)::B(C)
      • P(c);SBLOCK,XP(G)::R(B)+B(C)
      • P(c);SBLOCK,XP(H)::R(B)+B(C)
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