MESON Chess Problem Database

Problem Display
PID: 231253 (3Q4/1R6/4n1r1/5b2/4k1p1/1P1N2p1/2nK4/8 w - - 0 1)

Kubbel, Arvid Ivanovich

Shakhmaty, 1927

3Q4/1R6/4n1r1/5b2/4k1p1/1P1N2p1/2nK4/8

#2

5 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Qa8!
      • threat
        • 2.Rb4#
        • 2.Rd7#
      • 1...Kf3
        • 2.Rf7#
      • 1...Kd4
        • 2.Rd7#
      • 1...Kd5
        • 2.Rd7#
      • 1...Rg8
        • 2.Rb4#
      • 1...Se3
        • 2.Rb4#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Scd4
        • 2.Rb4#
      • 1...Sed4
        • 2.Re7#
      • 1...Sf4
        • 2.Rb4#
      • 1...Sc5
        • 2.Rb4#
      • 1...Sg5
        • 2.Rb4#
      • 1...Sc7
        • 2.Rb4#
      • 1...Sg7
        • 2.Rb4#
      • 1...Sd8
        • 2.Rb4#
      • 1...Sf8
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT::QAB(E)+R(D)
      • K(c);P-FLIGHT::R(D)
      • K(c);S_FLIGHT::QAB(E)+R(D),DCHECK
      • R(g);::QAB(E)+R(D),DCHECK
      • S(a);::QAB(E)+R(D),DCHECK
      • S(a);::QAB(E)+R(D),DCHECK,XS(a)
      • S(a);::QAB(E)+R(D)
      • S(f);SBLOCK::QAB(E)+R(D),DCHECK
      • S(f);::QAB(E)+R(D),DCHECK
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