MESON Chess Problem Database

Problem Display
PID: 140934 (8/8/BkN5/1P2B3/n7/3P1p2/5K2/6Q1 w - - 0 1)

Zuk, Henryk

Hlas l'udu, 1973

8/8/BkN5/1P2B3/n7/3P1p2/5K2/6Q1

#2

7 + 3

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Kxf3#
    • 1...Sc3
      • 2.Kxf3#
  • Tries
    • 1.Bd6?
      • 1...Sb2
        • 2.Kxf3#
      • 1...Sc3
        • 2.Kxf3#
      • 1...Sc5!
    • 1.Bc7+?
      • 1...Kc5
        • 2.Qg5#
      • 1...Kxc7!
    • 1.Qh2?
      • 1...Sc5
        • 2.Bc7#
      • 1...Sb2
        • 2.Bd4#
      • 1...Sc3
        • 2.Bd4#
      • 1...Kc5!
    • 1.Qc1?
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb2
        • 2.Qe3#
      • 1...Sc5!
    • 1.Qe1?
      • 1...Sc5
        • 2.Qa5#
      • 1...Sb2
        • 2.Qe3#
      • 1...Sc3
        • 2.Qe3#
      • 1...Kc5!
    • 1.Qg3?
      • 1...Sc5
        • 2.Bc7#
      • 1...Sb2
        • 2.Bd4#
      • 1...Sc3
        • 2.Bd4#
      • 1...Kc5!
    • 1.Qg4?
      • 1...Kc5
        • 2.Qd4#
      • 1...Sb2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sc5!
  • Keys
    • 1.Qg5!
      • 1...Kc5
        • 2.Bc7#
      • 1...Sc5
        • 2.Qd8#
      • 1...Sb2
        • 2.Qe3#
      • 1...Sc3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB(A)+K(B),XP(a)
  • Tries
    • Try
      • B(E);
      • Vars
        • S(b);N_GUARD::QAB(A)+K(B),XP(a)
      • Refutation
        • S(b);
    • Try
      • B(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(A)
      • Refutation
        • K(c);S_FLIGHT,XB(E)
    • Try
      • Q(A);
      • Vars
        • S(b);SBLOCK::B(E)
        • S(b);N_GUARD::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Vars
        • S(b);SBLOCK::QAB1(A)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(b);SBLOCK::B(E)
        • S(b);N_GUARD::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAR(A)+B(E)
      • S(b);SBLOCK::QAB(A)
      • S(b);N_GUARD::QAB(A)
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