MESON Chess Problem Database

Problem Display
PID: 132481 (8/5pN1/5p2/7R/4pk2/8/4K3/3Q4 w - - 0 1)

Koltanowski, George

Source?, 0000

8/5pN1/5p2/7R/4pk2/8/4K3/3Q4

#2

4 + 4

2425 San Francisco Chronicle 0000

SOLUTION

  • SOUND
  • Tries
    • 1.Kf2?
      • threat
        • 2.Rf5#
      • 1...f5
        • 2.Rxf5#
      • 1...e3+!
    • 1.Se6+?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg4
        • 2.Kf2#
      • 1...fxe6!
    • 1.Qe1?
      • threat
        • 2.Qh4#
      • 1...Kg4
        • 2.Qh4#
      • 1...f5!
    • 1.Qg1?
      • threat
        • 2.Rf5#
      • 1...f5
        • 2.Rxf5#
      • 1...e3!
  • Keys
    • 1.Sf5!
      • 1...Kg4
        • 2.Ke3#
      • 1...Ke5
        • 2.Qd6#
      • 1...e3
        • 2.Qd4#

There are these versions: 132482

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • R1(C)
      • Vars
        • P(c);::R1(C),XP(c)
      • Refutation
        • P(a);CHECK
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • K(b);P-FLIGHT::QAB(A)+K(B)
      • Refutation
        • P(d);XS(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • R1(C)
      • Vars
        • P(c);::R1(C),XP(c)
      • Refutation
        • P(a);
  • Actual
    • S(D);
    • Vars
      • K(b);P-FLIGHT::QAB(A)+K(B)
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);OGATEB::QAR2(A)
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