MESON Chess Problem Database

Problem Display
PID: 231161 (8/2p1np2/3b1P2/2p1k3/Q4NK1/8/1R3P2/8 w - - 0 1)

Kubbel, Arvid Ivanovich

Shakhmaty, 1927

8/2p1np2/3b1P2/2p1k3/Q4NK1/8/1R3P2/8

#2

6 + 6

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kxf6
        • 2.Sh5#
      • 1...Kxe4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Re2#
        • 2.Rb4#
      • 1...Kd4
        • 2.Rb4#
      • 1...Ke4
        • 2.Re2#
      • 1...Kxf6
        • 2.Rb6#
      • 1...Sd5
        • 2.Re2#
      • 1...Sf5
        • 2.Re2#
      • 1...Sc6
        • 2.Re2#
      • 1...c4
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(F)::S(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT::QAB(C)+R(A),DCHECK
      • K(b);P-FLIGHT::R(A)
      • K(b);S_FLIGHT,XP(F)::QAB(C)+R(A)
      • S(e);::QAB(C)+R(A),DCHECK
      • P(a);::QAB(C)+R(A),DCHECK
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