MESON Chess Problem Database

Problem Display
PID: 272044 (6q1/1pp3B1/3r4/PnPk1P1b/1p3Kp1/1p1N1n2/1P1N4/3R1Q1B w - - 0 1)

Shanshin, Valery Yurevich

Shakhmatnaya kompozitsiya, 1998

6q1/1pp3B1/3r4/PnPk1P1b/1p3Kp1/1p1N1n2/1P1N4/3R1Q1B

#2

11 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Sxb3?
      • threat
        • 2.Sxb4#
      • 1...Kc6
        • 2.Se5#
      • 1...Kc4!
    • 1.Se4?
      • threat
        • 2.Sxb4#
      • 1...Kc4
        • 2.Se5#
      • 1...Kc6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Sxb3#
      • 1...Kxc5
        • 2.Se4#
      • 1...Sa3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(a)
      • Threat
        • R(A)+S(F),DCHECK,XP(c)
      • Vars
        • K(f);S_CUTS(e),S_FLIGHT::S(F)
      • Refutation
        • K(f);N_SPINS(b),S_FLIGHT
    • Try
      • S(E);N_PINS(b)
      • Threat
        • R(A)+S(F),DCHECK,XP(c)
      • Vars
        • K(f);S_FLIGHT::QAB(B)+S(F),DCHECK
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(B)
    • Vars
      • K(f);N_SPINS(b),P-FLIGHT::R(A)+S(E),DCHECK,XP(a)
      • K(f);N_SPINS(b),P-FLIGHT,S_CUTS(b),S_CUTS(b),S_CUTS(e),XP(I)::S(E)
      • S(e);N_GUARD::R(A)+S(E),XP(a)
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