MESON Chess Problem Database

Problem Display
PID: 119972 (8/8/8/1p4RQ/2k2N2/p2p4/N1b2r2/K3n1B1 w - - 0 1)

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

La Strategie, 1908

8/8/8/1p4RQ/2k2N2/p2p4/N1b2r2/K3n1B1

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qf7#
    • 1...Rd2
      • 2.Qf7#
    • 1...Rg2
      • 2.Qf7#
    • 1...Rh2
      • 2.Qf7#
    • 1...Rf3
      • 2.Qf7#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Qd5#
      • 1...Kb3
        • 2.Qxb5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Rxf4!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qe5#
      • 1...Kb3!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qd5#
      • 1...Kb3
        • 2.Qxb5#
      • 1...Kd4
        • 2.Sg2#
      • 1...Rxf4
        • 2.Qf7#

There are these versions: 187649

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);::QAB(F)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(F)
      • Vars
        • K(f);P_SPINP(e),S_FLIGHT::QAR2(F),XP(g)
        • K(f);P-FLIGHT,P_SPINR(c)::QAR1(F)
      • Refutation
        • R(c);XS(D)
    • Try
      • R(E);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINR(c)::QAB1(F)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAB1(F)
    • Vars
      • K(f);S_FLIGHT::QAR2(F),XP(g)
      • K(f);P-FLIGHT,P_SPINR(c)::R(E)+S(D)
      • R(c);P_SPINR(c),XS(D)::QAB(F)
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