MESON Chess Problem Database

Problem Display
PID: 251017 (2nQ4/5R2/8/8/3p1K2/4PbP1/4pkP1/4N2R w - - 0 1)

Markovsky, Grigory F

Probleemblad, 1981

2nQ4/5R2/8/8/3p1K2/4PbP1/4pkP1/4N2R

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg2
      • 2.Sd3#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Rxf3#
      • 1...Kxg3
        • 2.Rxf3#
      • 1...Kxe3!
    • 1.e4?
      • threat
        • 2.Qxd4#
      • 1...d3
        • 2.Qd4#
      • 1...Sd6!
  • Keys
    • 1.Ke5!
      • threat
        • 2.Rxf3#
      • 1...Kxe3
        • 2.Qxd4#
      • 1...Kxg3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK,XP(C)::S(A)
  • Tries
    • Try
      • K(F);P_PINB(c),S_FLIGHT
      • Threat
        • R1(G),XB(c)
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT,XP(E)::R1(G),XB(c)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT,XP(D)
    • Try
      • P(D);
      • Threat
        • QAB(H),XP(d)
      • Vars
        • P(d);::QAB(H)
      • Refutation
        • S(e);
  • Actual
    • K(F);P_PINB(c),S_FLIGHT
    • Threat
      • R1(G),XB(c)
    • Vars
      • K(b);N_SPINB(c),OGATEB,S_FLIGHT,XP(D)::QAB1(H),XP(d)
      • K(b);N_SPINB(c),OGATEB,S_FLIGHT,XP(E)::QAB1(H)
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