MESON Chess Problem Database

Problem Display
PID: 7201 (b7/4r3/3Q4/2p2p2/4kp2/2KpPR2/5p1p/5B1q w - - 0 1)

Dyachuk, Vasyl Vasilovich

Comm., StrateGems, 1998

b7/4r3/3Q4/2p2p2/4kp2/2KpPR2/5p1p/5B1q

#2

5 + 10

145 StrateGems 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Qxf4#
    • 1...Bd5
      • 2.Qxf4#
    • 1...fxe3
      • 2.Rf4#
  • Tries
    • 1.Kc4?
      • threat
        • 2.Qxf4#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...Kxf3
        • 2.Qxf4#
      • 1...Qxf3
        • 2.Qxe7#
      • 1...fxe3
        • 2.Rf4#
        • 2.Qf4#
      • 1...Re5!
    • 1.Qd4+?
      • 1...Kxf3
        • 2.Qxf4#
      • 1...cxd4+!
    • 1.Qc6+?
      • 1...Ke5
        • 2.exf4#
      • 1...Bxc6!
  • Keys
    • 1.Kd2!
      • threat
        • 2.Rxf4#
      • 1...fxe3+
        • 2.Rxe3#
      • 1...Kxf3
        • 2.Qxf4#
      • 1...Qxf3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT,XR(D)::QAR1(E),XP(f)
    • B(j);SBLOCK::QAR1(E),XP(f)
    • P(f);SBLOCK,XP(C)::R1(D)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR1(E),XP(f)
      • Vars
        • B(j);CHECK,N_GUARD::QAB1(E),XB(j)
        • K(e);S_FLIGHT,XR(D)::QAR1(E),XP(f)
        • Q(a);SBLOCK,XR(D)::QAR(E),XR(i)
      • Refutation
        • R(i);
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(D)::QAR1(E),XP(f)
      • Refutation
        • P(g);CHECK,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);P-FLIGHT::P(C),XP(f)
      • Refutation
        • B(j);XQ(E)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • R1(D),XP(f)
    • Vars
      • P(f);CHECK,OGATE,XP(C)::R1(D),XP(f)
      • K(e);S_FLIGHT,XR(D)::QAR1(E),XP(f)
      • Q(a);SBLOCK,XR(D)::B(A),XP(d)
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