MESON Chess Problem Database

Problem Display
PID: 95006 (8/6B1/5n2/2p5/2kPp3/2N1R3/5P2/1R3KQ1 w - - 0 1)

Labai, Zoltan

Pravda, 1973

8/6B1/5n2/2p5/2kPp3/2N1R3/5P2/1R3KQ1

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg4?
      • 1...Kxd4
        • 2.Qxe4#
      • 1...cxd4
        • 2.Qc8#
      • 1...Sd5
        • 2.Qe2#
      • 1...Sh5
        • 2.Qe2#
        • 2.Qe6#
      • 1...Sd7
        • 2.Qe2#
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe2#
        • 2.Qe6#
      • 1...Se8
        • 2.Qe2#
        • 2.Qe6#
      • 1...Sg8
        • 2.Qe2#
        • 2.Qe6#
      • 1...Sxg4!
    • 1.Qg6?
      • 1...Kxd4
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...Sd5
        • 2.Qa6#
      • 1...Sh5
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...Sd7
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...Sh7
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...Se8
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...Sg8
        • 2.Qf7#
        • 2.Qa6#
        • 2.Qe6#
      • 1...cxd4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Qd5#
      • 1...cxd4
        • 2.Qb5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(b),P_SPINS(d),XP(G)::QAR1(C),XP(b)
        • P(c);OGATEB,SBLOCK,XP(G)::QAR(C)
        • S(d);::QAB(C)
      • Refutation
        • S(d);XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINS(d),XP(G)::QAR1(C),XP(b)
        • S(d);OGATE::QAB(C)
      • Refutation
        • P(c);XP(G)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(c)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(d),XP(G)::QAR1(C)
      • P(c);OGATE,SBLOCK,XP(G)::QAB1(C)
      • S(d);N_GUARD::QAB1(C),XS(d)
      • S(d);N_GUARD::QAB1(C)
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