MESON Chess Problem Database

Problem Display
PID: 211149 (8/8/8/6n1/2p1P1R1/4Pp2/1R1NPk2/2KQ1N2 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Sachova skladba, 2018

8/8/8/6n1/2p1P1R1/4Pp2/1R1NPk2/2KQ1N2

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.Sxe4#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.exf3#
      • 1...fxe2
        • 2.Qxe2#
      • 1...Sxe4!
    • 1.exf3?
      • threat
        • 2.Sb1#
        • 2.Sb3#
        • 2.Sxc4#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Sxe4
        • 2.Sxe4#
      • 1...c3!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Qe1#
      • 1...Sxf3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(d);XP(H)::S(E),XS(d)
  • Tries
    • Try
      • S(E);XP(c)
      • Threat
        • R(D)+P(F),XP(b)
      • Vars
        • P(b);OGATE,P_SPINP(b),XP(F)::QAR1(B),XP(b)
      • Refutation
        • S(d);XP(H)
    • Try
      • P(F);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • S(d);XP(F)::R(D)+S(E),XS(d)
        • S(d);XP(H)::R(D)+S(E),DCHECK,XS(d)
      • Refutation
        • P(c);
  • Actual
    • S(E);XP(b)
    • Threat
      • QAB1(B)
    • Vars
      • S(d);OGATE,XS(E)::R(D)+P(F),XS(d)
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