MESON Chess Problem Database

Problem Display
PID: 239237 (8/2Q2pb1/4k3/2R5/3P4/3K4/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Schach, 2008

8/2Q2pb1/4k3/2R5/3P4/3K4/8/8

#2

4 + 3

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qd6#
  • Tries
    • 1.Re5+?
      • 1...Kf6
        • 2.Qb6#
        • 2.Qd6#
        • 2.Qc6#
      • 1...Bxe5!
    • 1.Rc6+?
      • 1...Kd5
        • 2.Rd6#
        • 2.Qd6#
        • 2.Qd7#
      • 1...Kf5!
    • 1.Qd7+?
      • 1...Kf6
        • 2.Qd6#
      • 1...Kxd7!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qd6#
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kf6
        • 2.Qd6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bf8
        • 2.Qe5#
      • 1...f5
        • 2.Rd6#
      • 1...f6
        • 2.Qd7#

This anticipates 166961(2010)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • B(c);XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • R(C);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAR2(D)
      • K(a);P-FLIGHT::QAR2(D)
      • B(c);N_GUARD::QAR1(D),XB(c)
      • B(c);N_GUARD::QAR1(D)
      • P(b);SBLOCK::R1(C)
      • P(b);SBLOCK::QAB1(D)
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