MESON Chess Problem Database

Problem Display
PID: 135123 (4R3/8/8/8/K3Q3/8/2Bkp3/3N4 w - - 0 1)

Visbeen, Frank

Il Duale, 1981

4R3/8/8/8/K3Q3/8/2Bkp3/3N4

#2

5 + 2

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qxe2#
  • Tries
    • 1.Rd8+?
      • 1...Ke1
        • 2.Qh1#
      • 1...Kc1!
    • 1.Qd3+?
      • 1...Ke1
        • 2.Qxe2#
      • 1...Kc1!
    • 1.Qe3+?
      • 1...Ke1
        • 2.Qxe2#
      • 1...Kxc2!
  • Keys
    • 1.Bb3!
      • 1...Kc1
        • 2.Qc2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...exd1Q
        • 2.Qe3#
      • 1...exd1S
        • 2.Qc2#
      • 1...exd1B
        • 2.Qe3#
      • 1...exd1R
        • 2.Qc2#
        • 2.Qe3#
      • 1...e1Q
        • 2.Qc2#
      • 1...e1S
        • 2.Qe3#
      • 1...e1B
        • 2.Qc2#
        • 2.Qe3#
      • 1...e1R
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • P(b);P_PINB(B),XS(A)::QAB1(D)
      • P(b);XS(A)::QAR1(D)
      • P(b);::QAR1(D)
      • P(b);::QAB1(D)
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