MESON Chess Problem Database

Problem Display
PID: 148967 (B5K1/4pRP1/2QpP2P/4kNBR/4p2p/2n3b1/b2P4/8 w - - 0 1)

Savournin, Jacques

3rd Comm., The Problemist, 2012

B5K1/4pRP1/2QpP2P/4kNBR/4p2p/2n3b1/b2P4/8

#2

11 + 8

56 The Problemist 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Qxc3#
    • 1...Sb1
      • 2.Qxe4#
    • 1...Sd1
      • 2.Qxe4#
    • 1...Se2
      • 2.Qxe4#
    • 1...Sa4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qxe4#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Be3#
      • 1...Kxd4
        • 2.Qxc3#
      • 1...Bf4
        • 2.Bf6#
      • 1...e3
        • 2.Bxe3#
      • 1...Bxe6!
    • 1.Be3?
      • threat
        • 2.Sd4#
      • 1...Kxe6
        • 2.Sd4#
      • 1...Bxe6
        • 2.Qxc3#
      • 1...Bf4!
    • 1.Bf4+?
      • 1...Kxf4
        • 2.Se3#
      • 1...Kxe6
        • 2.Sd4#
        • 2.Qc8#
      • 1...Bxf4!
    • 1.Bf6+?
      • 1...Kxe6
        • 2.Sd4#
        • 2.Qc8#
      • 1...exf6
        • 2.Qxd6#
      • 1...Kf4!
    • 1.d4+?
      • 1...Kxe6
        • 2.Qc8#
      • 1...exd4 ep!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Qxd6#
      • 1...Kf4
        • 2.Se3#
      • 1...Kxe6
        • 2.Sd4#
      • 1...Sb5
        • 2.Qxe4#
      • 1...d5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(a);P_PINR(H),SBLOCK,XP(F)::QAB(E),XS(b)
    • S(b);N_GUARD::QAR1(E),XP(d)
  • Tries
    • Try
      • S(B);
      • Threat
        • R(D)+B(C)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(B)::QAB1(E),XS(b)
        • B(c);SBLOCK::R(D)+B(C),DCHECK
        • P(d);::R(D)+B(C),XP(d)
      • Refutation
        • B(a);P_PINR(H),XP(F)
    • Try
      • B(C);
      • Threat
        • R(D)+S(B)
      • Vars
        • K(f);P-FLIGHT,P_SPINP(g),XP(F)::S(B)
        • B(a);P_PINR(H),SBLOCK,XP(F)::QAB(E),XS(b)
      • Refutation
        • B(c);
    • Try
      • B(C);CHECK
      • Vars
        • K(f);S_FLIGHT,XB(C)::R(H)+S(B)
      • Refutation
        • B(c);XB(C)
    • Try
      • B(C);CHECK
      • Vars
        • P(h);XB(C)::QAB1(E),XP(g)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(A);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINP(g),XP(F)::QAB(E)
      • Refutation
        • P(d);EP,XP(A)
  • Actual
    • B(C);XP(h)
    • Threat
      • QAB1(E),XP(g)
    • Vars
      • K(f);S_FLIGHT::R(H)+S(B)
      • K(f);P-FLIGHT,P_SPINP(g),XP(F)::S(B)
      • S(b);N_GUARD::QAR1(E),XP(d)
      • P(g);::QAB1(E)
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