MESON Chess Problem Database

Problem Display
PID: 93422 (6br/4Qp2/3pp3/b2R1R2/p5Bp/5K2/1N1N4/4k3 w - - 0 1)

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

Shakhmaty v SSSR, 1939

6br/4Qp2/3pp3/b2R1R2/p5Bp/5K2/1N1N4/4k3

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Qxh4#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qg1#
        • 2.Qf2#
        • 2.Qe3#
      • 1...Bxd2
        • 2.Qg1#
        • 2.Qf2#
      • 1...exd5
        • 2.Qf2#
        • 2.Qe3#
      • 1...Bb6!
  • Keys
    • 1.Ke4!
      • threat
        • 2.Rf1#
      • 1...exd5+
        • 2.Kd3#
      • 1...exf5+
        • 2.Kf3#
      • 1...Bxd2
        • 2.Sd3#
      • 1...Bh7
        • 2.Qxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);S_CUTR(i)::QAB(G),XP(c)
  • Tries
    • Try
      • Q(G);N_PINP(f)
      • Threat
        • DUALS(3)
      • Refutation
        • B(d);
  • Actual
    • K(C);N_PINP(f),S_FLIGHT
    • Threat
      • R1(F)
    • Vars
      • P(f);CHECK,XR(E)::QAR(G)+K(C)
      • P(f);CHECK,XR(F)::QAR(G)+K(C)
      • B(d);SBLOCK,XS(B)::S(A)
      • B(h);P_PINR(F),S_CUTR(i)::QAB(G),XP(c)
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