MESON Chess Problem Database

Problem Display
PID: 251906 (8/8/p4p1B/Q6K/4k1N1/1PP5/1P2p2P/8 w - - 0 1)

Rychkov, Vladimir Nikolaevich

Probleemblad, 1982

8/8/p4p1B/Q6K/4k1N1/1PP5/1P2p2P/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qf5#
    • 1...Kf3
      • 2.Qd5#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...Kf3!
    • 1.Sxf6+?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kf3!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kf3
        • 2.Qd5#
      • 1...fxe5!
    • 1.c4?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qd5#
        • 2.Qf5#
      • 1...Kd3
        • 2.Qd5#
      • 1...Kf3
        • 2.Qf5#
      • 1...f5
        • 2.Qd5#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAB(F)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • K(b);S_FLIGHT::QAB(F)
        • P(d);::QAB1(F),XP(d)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);CHECK,XP(d)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • P(d);XQ(F)
    • Try
      • P(D);
      • Threat
        • QAB1(F)
      • Vars
        • K(b);S_FLIGHT::QAB(F)
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT::QAR2(F)
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