MESON Chess Problem Database

Problem Display
PID: 7350 (8/2pRN3/2P3Br/q4p2/N2pk2p/2p2R1K/6PB/8 w - - 0 1)

Bouchez, Laurent

Primault, Andre

StrateGems, 1999

8/2pRN3/2P3Br/q4p2/N2pk2p/2p2R1K/6PB/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Bxf5#
    • 1...Qb6
      • 2.Bxf5#
    • 1...Qxa4
      • 2.Bxf5#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qa6
      • 2.Sc5#
      • 2.Bxf5#
    • 1...Qa7
      • 2.Bxf5#
    • 1...Qa8
      • 2.Sc5#
      • 2.Bxf5#
  • Tries
    • 1.Sxc3+?
      • 1...Qxc3
        • 2.Bxf5#
      • 1...dxc3!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Rxd4#
      • 1...Qxf5+
        • 2.Bxf5#
      • 1...Qxa4
        • 2.Sxh6#
      • 1...Qb4
        • 2.Sxh6#
      • 1...Qb6
        • 2.Sxh6#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qd5
        • 2.Sd6#
      • 1...Qe5
        • 2.Sg3#
      • 1...Qa7
        • 2.Sxh6#
      • 1...d3
        • 2.Re3#
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD::B(G),XP(f)
    • Q(e);N_GUARD,XS(E)::B(G),XP(f)
    • Q(e);N_GUARD::S(E),XQ(e)
  • Tries
    • Try
      • S(E);CHECK,XP(a)
      • Vars
        • Q(e);P_PINR(C),XS(E)::B(G),XP(f)
      • Refutation
        • P(b);XS(E)
  • Actual
    • S(I);XP(f)
    • Threat
      • R1(H),XP(b)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),XS(I)::B(G),XQ(e)
      • Q(e);N_GUARD,XS(E)::B(G)+S(I),XR(g)
      • Q(e);N_GUARD::B(G)+S(I),XR(g)
      • Q(e);N_GUARD::S(E),XQ(e)
      • Q(e);SBLOCK::B(G)+S(I),DCHECK
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