MESON Chess Problem Database

Problem Display
PID: 180264 (R1N1Bk2/4p3/3NK3/4b1Q1/8/8/r7/1r6 w - - 0 1)

Lider, Valentin Viktorovich

Schach, 1962

R1N1Bk2/4p3/3NK3/4b1Q1/8/8/r7/1r6

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Qg8#
      • 1...Rg1
        • 2.Ba4#
      • 1...Rg2
        • 2.Bb5#
      • 1...Bg7!
    • 1.Qh6+?
      • 1...Kg8
        • 2.Sxe7#
        • 2.Bf7#
      • 1...Bg7!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Qg8#
      • 1...Rg1
        • 2.Sa7#
      • 1...Rg2
        • 2.Sb6#
      • 1...Bg7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(d)
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::R(D)+B(F)
        • R(b);N_GUARD::R(D)+B(F)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • B(F);
    • Threat
      • QAR1(A)
    • Vars
      • R(a);N_GUARD::R(D)+S(E)
      • R(b);N_GUARD::R(D)+S(E)
      • B(c);SBLOCK::QAB1(A),XP(d)
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