MESON Chess Problem Database

Problem Display
PID: 120944 (8/8/4p3/1Q3RP1/4kP2/1nP4K/2b5/3B4 w - - 0 1)

Sobek, Karel

Zemedelske noviny, 1965

8/8/4p3/1Q3RP1/4kP2/1nP4K/2b5/3B4

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qe2#
    • 1...Bd3
      • 2.Qe5#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Re5#
      • 1...Ke3
        • 2.Qe2#
      • 1...e5
        • 2.Rxe5#
      • 1...exf5!
    • 1.Bf3+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kxf3!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kxf5
        • 2.Bxc2#
      • 1...Sd4!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Re5#
      • 1...Ke3
        • 2.Qe2#
      • 1...Kxf5
        • 2.Bxc2#
      • 1...exf5
        • 2.Qf3#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR1(E)
    • B(a);SBLOCK::QAR1(E)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • R1(F)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • P(d);::R1(F),XP(d)
      • Refutation
        • P(d);XR(F)
    • Try
      • B(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT,XB(A)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • K(c);S_FLIGHT,XR(F)::B(A),XB(a)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(E);
    • Threat
      • R1(F)
    • Vars
      • K(c);P-FLIGHT::QAR1(E)
      • K(c);S_FLIGHT,XR(F)::B(A),XB(a)
      • P(d);SBLOCK,XR(F)::QAB1(E)
      • P(d);::R1(F),XP(d)
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