MESON Chess Problem Database

Problem Display
PID: 110203 (4N3/5N2/Q2P4/ppk2P2/rp1n2R1/pn6/5B1K/1B1R4 w - - 0 1)

Labai, Zoltan

Polish Chess Federation and Gdynia-60 JT, 1986

4N3/5N2/Q2P4/ppk2P2/rp1n2R1/pn6/5B1K/1B1R4

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rc1+?
      • 1...Kd5
        • 2.Sf6#
        • 2.Sc7#
        • 2.Be4#
      • 1...Sxc1!
    • 1.Qc8+?
      • 1...Kd5
        • 2.Sf6#
        • 2.Be4#
      • 1...Kb6!
  • Keys
    • 1.Ba2!
      • 1...Kc4
        • 2.Qc6#
      • 1...Kd5
        • 2.Qxb5#
      • 1...Sa1
        • 2.Bxd4#
      • 1...Sc1
        • 2.Bxd4#
        • 2.Rxc1#
      • 1...Sd2
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • S(b);XR(B)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(h);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(h);N_SPINS(e),P-FLIGHT,P_SPINP(g),P_SPINS(b)::QAR2(G)
      • K(h);N_SPINS(e),P-FLIGHT,P_SPINS(b)::QAR2(G),XP(g)
      • S(b);N_GUARD::B(C),XS(e)
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