MESON Chess Problem Database

Problem Display
PID: 120076 (8/K2p4/8/1Pk1B3/b3Q3/1p6/1P6/8 w - - 0 1)

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

Deutsche Arbeiter Schachzeitung, 1909

8/K2p4/8/1Pk1B3/b3Q3/1p6/1P6/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6+?
      • 1...Kxb5
        • 2.Qd5#
      • 1...Kxd6!
    • 1.Qd5+?
      • 1...Kb4
        • 2.Bc3#
      • 1...Kxd5!
    • 1.Qc6+?
      • 1...Kb4
        • 2.Bc3#
      • 1...dxc6!
  • Keys
    • 1.Bc3!
      • 1...Kxb5
        • 2.Qd5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Bxb5
        • 2.Bb4#
      • 1...d5
        • 2.Qb4#
      • 1...d6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR2(B)
      • Refutation
        • K(c);S_FLIGHT,XB(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::B(D)
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::B(D)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • B(D);
    • Vars
      • K(c);P-FLIGHT,XP(C)::QAR2(B)
      • K(c);S_FLIGHT::QAB1(B)
      • B(b);SBLOCK,XP(C)::B(D)
      • P(d);SBLOCK::QAB1(B)
      • P(d);N_GUARD::QAR1(B)
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