MESON Chess Problem Database

Problem Display
PID: 69294 (8/1p6/pB6/K1p2p2/5P2/7p/4PQ2/7k w - - 0 1)

Korponai, Jozsef

Chess Life, 1968

8/1p6/pB6/K1p2p2/5P2/7p/4PQ2/7k

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Qf1#
    • 1...c4
      • 2.Qg1#
  • Tries
    • 1.Ka4?
      • 1...h2
        • 2.Qf1#
      • 1...c4
        • 2.Qg1#
      • 1...a5!
    • 1.Bxc5?
      • threat
        • 2.Qg1#
      • 1...h2
        • 2.Qf1#
        • 2.Qf3#
      • 1...b6+!
    • 1.Qg3?
      • 1...c4
        • 2.Qg1#
        • 2.Qxh3#
      • 1...h2!
    • 1.e3?
      • 1...h2
        • 2.Qf1#
      • 1...c4!
    • 1.e4?
      • 1...c4
        • 2.Qg1#
      • 1...h2
        • 2.Qf1#
      • 1...fxe4!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qg1#
      • 1...Kg2
        • 2.Qg1#
      • 1...Kh2
        • 2.Qg1#
      • 1...h2
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::QAR2(B)
    • P(c);::QAR1(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
        • P(c);::QAR1(B)
      • Refutation
        • P(e);
    • Try
      • B(E);XP(c)
      • Threat
        • QAR1(B)
      • Refutation
        • P(f);CHECK
    • Try
      • Q(B);
      • Refutation
        • P(b);
    • Try
      • P(A);
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • P(A);
      • Vars
        • P(c);::QAR1(B)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • P(d);XP(A)
  • Actual
    • Q(B);XP(c)
    • Threat
      • QAR1(B)
    • Vars
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • P(b);SBLOCK::QAB(B)
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Developed and maintained by Brian Stephenson.
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