MESON Chess Problem Database

Problem Display
PID: 78945 (8/8/4Q3/2P1P3/1kN5/8/8/2KB4 w - - 0 1)

Rice, John Michael

The Tablet, 1960

(First published on Sat Nov 5 1960)

8/8/4Q3/2P1P3/1kN5/8/8/2KB4

#2

6 + 1

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Sd2?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Se3?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Sa5?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qc4#
      • 1...Kxa5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kxc5!
  • Keys
    • 1.Sa3!
      • 1...Kxa3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kxc5
        • 2.Qd6#

Anticipated by 4734(1889), 76028(1925)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT,XS(C)::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR1(F)
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(F)
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