MESON Chess Problem Database

Problem Display
PID: 172326 (1K6/1Q6/8/k7/bp6/8/1PN5/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

1K6/1Q6/8/k7/bp6/8/1PN5/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ka7?
      • threat
        • 2.Qa6#
        • 2.Qxb4#
        • 2.Qb6#
      • 1...Bxc2
        • 2.Qa6#
      • 1...Bb3
        • 2.Qa6#
        • 2.Qxb4#
      • 1...Bc6
        • 2.Qa6#
        • 2.Qxb4#
      • 1...Bd7
        • 2.Qa6#
        • 2.Qxb4#
      • 1...Be8
        • 2.Qa6#
        • 2.Qxb4#
      • 1...b3
        • 2.Qa6#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Bb5!
    • 1.Sd4?
      • threat
        • 2.Qa7#
      • 1...Bb5
        • 2.Qxb5#
      • 1...b3!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sc4#
        • 2.Qa7#
      • 1...bxa3
        • 2.b4#
      • 1...Bd1
        • 2.Qb5#
        • 2.Qa7#
      • 1...Bc2
        • 2.Qb5#
        • 2.Qa7#
      • 1...Bb3
        • 2.Qb5#
        • 2.Qa7#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Bc6
        • 2.Qa7#
      • 1...Bd7
        • 2.Qa7#
      • 1...Be8
        • 2.Qa7#
      • 1...b3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XS(B)::QAR1(C)
      • Refutation
        • B(a);
    • Try
      • S(B);
      • Threat
        • QAR2(C)
      • Vars
        • B(a);N_GUARD::QAR1(C),XB(a)
      • Refutation
        • P(b);
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);OGATE,XS(B)::P(A)
      • B(a);N_GUARD::QAR1(C),XB(a)
      • B(a);::QAR2(C)
      • P(b);::S(B)
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