MESON Chess Problem Database

Problem Display
PID: 3166 (8/8/8/B7/4p3/1Q6/1K2kp2/3R4 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Rezetsj, 1939

8/8/8/B7/4p3/1Q6/1K2kp2/3R4

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
4883 Still More Fun with Chess Miniatures 2002
133 The Problemist Supplement 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf1?
      • 1...e3
        • 2.Qd1#
      • 1...Kxf1!
    • 1.Rd2+?
      • 1...Ke1
        • 2.Qd1#
      • 1...Kf1!
    • 1.Qe3+?
      • 1...Kxd1
        • 2.Qd2#
      • 1...Kxe3!
  • Keys
    • 1.Qg3!
      • 1...Kxd1
        • 2.Qg4#
      • 1...f1Q
        • 2.Rd2#
      • 1...f1S
        • 2.Re1#
      • 1...f1B
        • 2.Re1#
        • 2.Rd2#
      • 1...f1R
        • 2.Rd2#
      • 1...e3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(A)::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT,XR(A)::QAB(C)
      • P(b);SBLOCK::R1(A)
      • P(b);N_GUARD::R1(A)
      • P(c);SBLOCK::QAB(C)
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