MESON Chess Problem Database

Problem Display
PID: 137175 (8/8/RB1k3p/Pp5r/4QpP1/2N4p/8/4K3 w - - 0 1)

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

2nd Prize, Shakhmaty, 1924

8/8/RB1k3p/Pp5r/4QpP1/2N4p/8/4K3

#2

7 + 6

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Bd8+?
      • 1...Kc5
        • 2.Be7#
        • 2.Rc6#
      • 1...Kd7!
    • 1.Qb7?
      • threat
        • 2.Bd4#
      • 1...Re5+
        • 2.Be3#
      • 1...Ke5
        • 2.Qe7#
      • 1...Ke6
        • 2.Bd4#
      • 1...Rc5!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Ba7#
        • 2.Bd8#
        • 2.Qc7#
      • 1...Kxe7!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Bd4#
      • 1...Re5+
        • 2.Be3#
      • 1...Ke5
        • 2.Qe7#
      • 1...Kc6
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Ba7#
        • 2.Qc7#
      • 1...Ke6
        • 2.Bd4#
        • 2.Bc7#
      • 1...Rc5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • R(F)+B(G)
      • Vars
        • R(d);CHECK,SBLOCK::R(F)+B(G)
        • K(e);S_FLIGHT::QAR2(C)
        • K(e);P-FLIGHT::R(F)+B(G)
      • Refutation
        • R(d);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R(F)+B(G)
    • Vars
      • R(d);CHECK,SBLOCK::R(F)+B(G)
      • K(e);S_FLIGHT::QAR2(C)
      • R(d);SBLOCK::R(F)+B(G),DCHECK
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