MESON Chess Problem Database

Problem Display
PID: 106084 (7q/5r2/nQ6/4pp2/5kPp/B1PPR1p1/4B3/4K3 w - - 0 1)

Fedyakov, Sergey

Slovensky Dennik, 1992

7q/5r2/nQ6/4pp2/5kPp/B1PPR1p1/4B3/4K3

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Qxh6#
    • 1...Qa8
      • 2.Qh6#
    • 1...Qb8
      • 2.Qh6#
    • 1...Qc8
      • 2.Qh6#
    • 1...Qe8
      • 2.Qh6#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Qe3#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Kg5
        • 2.Bc1#
      • 1...Qxe5
        • 2.Qh6#
      • 1...Sc5!
    • 1.Qg6?
      • threat
        • 2.Rf3#
      • 1...Kxe3
        • 2.Bc1#
      • 1...fxg4
        • 2.Re4#
      • 1...Qa8
        • 2.Qh6#
      • 1...e4!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Re4#
      • 1...Kg5
        • 2.Rxe5#
      • 1...fxg4
        • 2.Rf3#
      • 1...e4
        • 2.Rxe4#
      • 1...g2
        • 2.Rh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(h);N_GUARD::QAB(H),XQ(h)
    • Q(h);N_GUARD::QAB(H)
  • Tries
    • Try
      • R(F);XP(d)
      • Threat
        • QAB1(H)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(H)
        • K(b);P_SPINP(e),S_FLIGHT::B(C)
        • Q(h);N_GUARD,P_PINB(B),SBLOCK,XR(F)::QAB(H)
      • Refutation
        • S(f);
    • Try
      • Q(H);
      • Threat
        • R1(F)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(F)::B(C)
        • P(e);N_GUARD,XP(G)::R1(F)
        • Q(h);N_GUARD::QAB(H)
      • Refutation
        • P(d);
  • Actual
    • B(C);
    • Threat
      • B(C)+R(F),DCHECK
    • Vars
      • K(b);S_FLIGHT::B(C)+R(F),XP(d)
      • P(e);SBLOCK,XP(G)::B(C)+R(F),DCHECK
      • P(d);::B(C)+R(F),DCHECK,XP(d)
      • P(a);OGATE::B(C)+R(F)
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