MESON Chess Problem Database

Problem Display
PID: 9537 (8/7Q/2p2K2/3kB3/8/8/1N3P2/8 w - - 0 1)

Ursic, Andrej Anton

Deutsches Wochenschach, 1905

8/7Q/2p2K2/3kB3/8/8/1N3P2/8

#2

5 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997
3713 Snap 2003
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qh1#
      • 2.Qb7#
  • Tries
    • 1.Kf5?
      • 1...c5
        • 2.Qh1#
        • 2.Qb7#
        • 2.Qd7#
      • 1...Kc5!
    • 1.Qb1?
      • 1...c5
        • 2.Qh1#
      • 1...Kc5!
    • 1.Qf5?
      • 1...c5
        • 2.Qf3#
      • 1...Kc5!
    • 1.Qg6?
      • 1...c5
        • 2.Qg2#
      • 1...Kc5!
    • 1.Qg8+?
      • 1...Ke4
        • 2.Qg2#
      • 1...Kc5!
    • 1.Qh2?
      • 1...Ke4
        • 2.Qh1#
        • 2.Qg2#
      • 1...c5
        • 2.Qh1#
        • 2.Qg2#
      • 1...Kc5!
    • 1.Qh3?
      • 1...Ke4
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qd3#
      • 1...c5
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Kc5!
    • 1.Qh4?
      • threat
        • 2.Qc4#
        • 2.Qd4#
      • 1...c5
        • 2.Qh1#
      • 1...Kc5!
    • 1.Qh5?
      • 1...Ke4
        • 2.Qh1#
      • 1...c5
        • 2.Qf3#
        • 2.Qh1#
      • 1...Kc5!
    • 1.Qh6?
      • 1...Ke4
        • 2.Qh1#
      • 1...c5
        • 2.Qh1#
      • 1...Kc5!
    • 1.Qa7?
      • threat
        • 2.Qd4#
      • 1...c5
        • 2.Qb7#
        • 2.Qa8#
      • 1...Ke4!
    • 1.Qb7?
      • 1...Ke4
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Qd7+?
      • 1...Ke4
        • 2.Qxc6#
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qe7?
      • 1...c5
        • 2.Qb7#
      • 1...Ke4!
    • 1.Qg7?
      • 1...Ke4
        • 2.Qg2#
      • 1...c5
        • 2.Qg2#
        • 2.Qb7#
      • 1...Kc5!
    • 1.Qh8?
      • 1...Ke4
        • 2.Qh1#
      • 1...c5
        • 2.Qh1#
        • 2.Qa8#
      • 1...Kc5!
    • 1.f3?
      • 1...c5
        • 2.Qe4#
        • 2.Qb7#
        • 2.Qd7#
      • 1...Kc5!
    • 1.f4?
      • 1...c5
        • 2.Qh1#
        • 2.Qb7#
      • 1...Kc5!
  • Keys
    • 1.Qc7!
      • 1...Ke4
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qa5#
      • 1...c5
        • 2.Qb7#

This anticipates 203397(1924), 47999(1948), 118247(1967)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • P(b);SBLOCK::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);P_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB(E),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(B);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(B);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB(E),XP(b)
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(E)
      • P(b);OGATEB,SBLOCK::QAB(E)
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