MESON Chess Problem Database

Problem Display
PID: 98502 (3Q2K1/8/3n4/NR6/3kPRp1/8/2B5/8 w - - 0 1)

Petkov, Petko Andonov

Problemas, 1968

3Q2K1/8/3n4/NR6/3kPRp1/8/2B5/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2?
      • 1...Kc3
        • 2.Qf6#
      • 1...Ke3
        • 2.Qb6#
      • 1...g3!
    • 1.Qxd6+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Qxd6#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::QAB(F)
      • Refutation
        • P(b);
    • Try
      • Q(F);CHECK,XS(c)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAR2(F),XS(c)
    • Vars
      • K(a);N_SPINS(c),S_FLIGHT::QAB1(F)
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