MESON Chess Problem Database

Problem Display
PID: 43629 (5kr1/R5p1/4p1B1/5q2/8/7b/2R2Qn1/1K6 w - - 0 1)

Wostijn, A

De Problemist, 1930

5kr1/R5p1/4p1B1/5q2/8/7b/2R2Qn1/1K6

#2

5 + 7

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2
      • 2.Rc8#
    • 1...Qf3
      • 2.Rc8#
      • 2.Qc5#
    • 1...Qf4
      • 2.Rc8#
    • 1...Qf6
      • 2.Rc8#
    • 1...Qf7
      • 2.Rc8#
      • 2.Qxf7#
    • 1...e5
      • 2.Qc5#
  • Tries
    • 1.Bxf5?
      • threat
        • 2.Rc8#
      • 1...Ke8
        • 2.Rc8#
      • 1...Bxf5!
    • 1.Re7?
      • threat
        • 2.Re8#
      • 1...Qf7
        • 2.Qxf7#
      • 1...Kxe7!
    • 1.Rf7+?
      • 1...Qxf7
        • 2.Qxf7#
      • 1...Ke8!
    • 1.Qf4?
      • threat
        • 2.Qd6#
        • 2.Qb8#
      • 1...Qxf4
        • 2.Rc8#
      • 1...Qf7
        • 2.Rc8#
        • 2.Qxf7#
      • 1...Rh8
        • 2.Qb8#
      • 1...Qf6
        • 2.Rc8#
      • 1...e5
        • 2.Qb4#
      • 1...Sxf4!
    • 1.Qxf5+?
      • 1...exf5
        • 2.Rc8#
      • 1...Bxf5!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qa8#
      • 1...Qxf3
        • 2.Rc8#
      • 1...Qf7
        • 2.Rc8#
        • 2.Qxf7#
      • 1...Qf4
        • 2.Rc8#
      • 1...Qf6
        • 2.Rc8#
      • 1...e5
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_PINR(B),N_SPINQ(c),XQ(C)::R(B)
    • Q(c);N_PINR(B)::R(B)
    • P(d);::QAB(C)
  • Tries
    • Try
      • B(D);N_SPINR(B),XQ(c)
      • Threat
        • R(B)
      • Vars
        • K(f);P-FLIGHT::R(B)
      • Refutation
        • B(b);P_PINR(B),P_SPINB(b),XB(D)
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • Q(c);N_PINR(B),OGATE::QAR1(C),XQ(c)
      • Refutation
        • K(f);N_SPINQ(c),S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK,N_PINQ(c)
      • Vars
        • Q(c);N_PINR(B),OGATE,P_SPINQ(c),XR(E)::QAR1(C),XQ(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_PINR(B),N_SPINQ(c),XQ(C)::R(B)
        • R(g);::QAR(C)
        • Q(c);N_PINR(B)::R(B)
        • P(d);::QAB(C)
      • Refutation
        • S(a);N_SPINQ(c),XQ(C)
    • Try
      • Q(C);CHECK,N_SPINR(B),XQ(c)
      • Vars
        • P(d);XQ(C)::R(B)
      • Refutation
        • B(b);P_PINR(B),XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • Q(c);N_PINR(B),N_SPINQ(c),XQ(C)::R(B)
      • Q(c);N_PINR(B)::R(B)
      • P(d);::QAB(C)
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