MESON Chess Problem Database

Problem Display
PID: 86928 (4K3/4QpN1/8/b7/3R1nkP/8/3nrBP1/1b1Br3 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 1997

4K3/4QpN1/8/b7/3R1nkP/8/3nrBP1/1b1Br3

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qg5#
  • Tries
    • 1.Bxe2+?
      • 1...Sf3
        • 2.Bxf3#
        • 2.Qg5#
      • 1...Rxe2!
    • 1.Qe3?
      • threat
        • 2.Rxf4#
      • 1...Be4
        • 2.Qg3#
      • 1...Se4
        • 2.Qf3#
      • 1...Bc7!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Rxf4#
      • 1...Be4
        • 2.Qg5#
      • 1...Se4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_PINQ(F),N_SPINS(e)::QAR1(F)
  • Tries
    • Try
      • B(A);CHECK,N_SPINQ(F),XR(d)
      • Refutation
        • R(b);P_PINQ(F),XB(A)
    • Try
      • Q(F);
      • Threat
        • R1(D),XS(e)
      • Vars
        • B(a);N_PINQ(F),N_SPINS(e)::QAR1(F)
        • S(c);N_PINQ(F),N_SPINS(e)::QAB1(F)
      • Refutation
        • B(g);
  • Actual
    • Q(F);
    • Threat
      • R1(D),XS(e)
    • Vars
      • B(a);N_PINQ(F),N_SPINS(e)::QAR1(F)
      • S(c);N_PINQ(F),N_SPINS(e)::QAB1(F)
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