MESON Chess Problem Database

Problem Display
PID: 10656 (8/8/8/8/K1kp4/2p2B2/6Q1/5N2 w - - 0 1)

Lokker, Miklosh S

2nd Prize, Stella Polaris, 1966

8/8/8/8/K1kp4/2p2B2/6Q1/5N2

#2

4 + 3

5862 An ABC of Chess Problems 1970
2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
4640 Chess Wizardry: The New ABC of Chess Problems 1996
3310 2345 Chess Problems 1997
136 Problem Observer 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe2#
    • 1...c2
      • 2.Qxc2#
  • Tries
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Kc5!
    • 1.Bc6?
      • 1...Kd3
        • 2.Bb5#
      • 1...c2
        • 2.Qxc2#
      • 1...d3
        • 2.Qd5#
      • 1...Kc5!
    • 1.Ba8?
      • 1...Kc5
        • 2.Qc6#
      • 1...c2
        • 2.Qxc2#
      • 1...d3
        • 2.Qd5#
      • 1...Kd3!
    • 1.Qa2+?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5!
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5
        • 2.Qb4#
      • 1...d3
        • 2.Qb4#
      • 1...c2
        • 2.Qxc2#
      • 1...cxb2!
    • 1.Qh2?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5
        • 2.Qc7#
      • 1...c2
        • 2.Qxc2#
      • 1...d3!
    • 1.Qg6?
      • 1...Kc5
        • 2.Qc6#
      • 1...c2
        • 2.Qxc2#
      • 1...d3!
  • Keys
    • 1.Bb7!
      • 1...Kd3
        • 2.Ba6#
      • 1...Kc5
        • 2.Qc6#
      • 1...c2
        • 2.Qxc2#
      • 1...d3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(B)
    • P(a);OGATEB::QAR2(B),XP(a)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::B(C)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(c);::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(c);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);P-FLIGHT::QAB1(B)
        • P(c);SBLOCK::QAR1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);P-FLIGHT::QAR2(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(c);
  • Actual
    • B(C);
    • Vars
      • K(b);S_FLIGHT::B(C)
      • K(b);P-FLIGHT::QAR1(B)
      • P(a);OGATEB::QAR2(B),XP(a)
      • P(c);::QAB1(B)
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