MESON Chess Problem Database

Problem Display
PID: 95008 (8/1p3pB1/1K3P2/1pP1k1NP/1P3n2/2P1N1Q1/1PP5/8 w - - 0 1)

Labai, Zoltan

5th Prize, Pravda (Bratislava), 1979-1980

8/1p3pB1/1K3P2/1pP1k1NP/1P3n2/2P1N1Q1/1PP5/8

#2

12 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2?
      • 1...Kf5
        • 2.Qxf4#
      • 1...Kd5!
    • 1.Sd5?
      • 1...Kf5
        • 2.Qxf4#
      • 1...Kxd5!
    • 1.Sf3+?
      • 1...Ke6
        • 2.Qg4#
      • 1...Ke4!
    • 1.Sh3?
      • 1...Ke4
        • 2.Qxf4#
      • 1...Ke6!
    • 1.Qf2?
      • 1...Sxh5
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sg2
        • 2.Qf5#
      • 1...Sd3
        • 2.Qf5#
      • 1...Sh3
        • 2.Qf5#
      • 1...Se6
        • 2.Qf5#
      • 1...Sg6
        • 2.Qf5#
      • 1...Sd5+!
    • 1.Qh4?
      • 1...Sxh5
        • 2.Qd4#
        • 2.Qe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Sg2
        • 2.Qd4#
        • 2.Qe4#
      • 1...Sd3
        • 2.Qd4#
        • 2.Qe4#
      • 1...Sh3
        • 2.Qd4#
        • 2.Qe4#
      • 1...Se6
        • 2.Sf3#
        • 2.Sxf7#
        • 2.Qe4#
      • 1...Sg6
        • 2.Qd4#
        • 2.Qe4#
      • 1...Sd5+!
    • 1.c4?
      • 1...Kd4
        • 2.Qxf4#
      • 1...bxc4!
    • 1.c6?
      • 1...Kd6
        • 2.Qxf4#
      • 1...bxc6!
  • Keys
    • 1.Bf8!
      • 1...Kxf6
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAR1(E),XS(a)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAR1(E),XS(a)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT,XS(D)
    • Try
      • S(H);CHECK
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAB(E)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • S(H);
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAR1(E),XS(a)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • Q(E);N_PINS(a)
      • Vars
        • S(a);OGATE,XP(I)::QAR1(E)
        • S(a);OGATE::QAR1(E)
      • Refutation
        • S(a);CHECK
    • Try
      • Q(E);N_PINS(a)
      • Vars
        • S(a);OGATE::QAR1(E)
      • Refutation
        • S(a);CHECK
    • Try
      • P(C);
      • Vars
        • K(c);N_SPINS(a),S_FLIGHT::QAR2(E),XS(a)
      • Refutation
        • P(b);XP(C)
    • Try
      • P(G);
      • Vars
        • K(c);S_FLIGHT::QAB(E),XS(a)
      • Refutation
        • P(d);XP(G)
  • Actual
    • B(L);
    • Vars
      • K(c);N_SPINS(a),S_FLIGHT,XP(K)::QAR2(E),XS(a)
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