MESON Chess Problem Database

Problem Display
PID: 45057 (4r3/8/5PP1/3p3R/QB2k3/n1pp3R/8/7K w - - 0 1)

Valuska, Jan

2nd Comm., Problem Paradise, 1998-1999

4r3/8/5PP1/3p3R/QB2k3/n1pp3R/8/7K

#2

7 + 6

3666 Problem Paradise 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bxa3#
    • 1...Kf4
      • 2.Bd6#
  • Tries
    • 1.Bxc3+?
      • 1...d4
        • 2.Qxd4#
      • 1...Sc4!
    • 1.Bc5+?
      • 1...d4
        • 2.Qxd4#
      • 1...Sc4!
    • 1.Bd6+?
      • 1...d4
        • 2.Qc6#
        • 2.Qxe8#
      • 1...Sc4!
    • 1.Qd7?
      • threat
        • 2.Qg4#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Re6!
    • 1.Qxe8+?
      • 1...Kd4
        • 2.R3h4#
        • 2.R5h4#
      • 1...Kf4!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qg4#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Kf4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAR(C)+B(D),XS(a)
    • K(d);P-FLIGHT::QAR(C)+B(D),DCHECK
  • Tries
    • Try
      • B(D);CHECK,XP(b)
      • Vars
        • P(e);P_SPINP(e)::QAR1(C),XP(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • B(D);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAR1(C),XP(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • B(D);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR1(C),XP(e)
        • K(d);P-FLIGHT::QAR1(C)
      • Refutation
        • R(f);
    • Try
      • Q(C);CHECK,XR(f)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(c)::QAR1(C),XP(c)
      • K(d);P-FLIGHT::QAR1(C)
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