MESON Chess Problem Database

Problem Display
PID: 120069 (4k2r/3p4/3p2Pb/1K1N4/8/7p/6nq/5Q2 w - - 0 1)

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

Deutsches Wochenschach, 1907

4k2r/3p4/3p2Pb/1K1N4/8/7p/6nq/5Q2

#2

4 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sc7#
        • 2.Qe7#
      • 1...Rh7
        • 2.Sc7#
      • 1...Bg5
        • 2.Sc7#
        • 2.Qxh8#
      • 1...Bf8
        • 2.Sc7#
      • 1...Qe5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...Bg5
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);::S(C)
        • B(e);::S(C)
      • Refutation
        • Q(b);P_PINS(C)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(g);P-FLIGHT::QAR(A)
      • K(g);P-FLIGHT::QAR2(A),XR(h)
      • B(e);N_GUARD::QAR(A),XR(h)
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