MESON Chess Problem Database

Problem Display
PID: 172298 (8/8/6N1/8/8/1Q3PkP/6b1/6K1 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/8/6N1/8/8/1Q3PkP/6b1/6K1

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • threat
        • 2.Qg4#
      • 1...Kxh3
        • 2.Qg4#
        • 2.Qh4#
      • 1...Bxf3
        • 2.Qh4#
      • 1...Bxh3
        • 2.Qf4#
      • 1...Kxf3!
    • 1.Qb4?
      • threat
        • 2.Qg4#
      • 1...Kxh3
        • 2.Qg4#
        • 2.Qh4#
      • 1...Bxf3
        • 2.Qh4#
      • 1...Bxh3
        • 2.Qf4#
      • 1...Kxf3!
    • 1.Qb8+?
      • 1...Kxh3
        • 2.Qh2#
      • 1...Kxf3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qg4#
      • 1...Kxf3
        • 2.Qd3#
      • 1...Kxh3
        • 2.Qg4#
        • 2.Qh4#
      • 1...Bxf3
        • 2.Qh4#
      • 1...Bxh3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB1(B)
        • B(a);SBLOCK,XP(D)::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB1(B)
        • B(a);SBLOCK,XP(D)::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::QAR2(B)
      • B(a);SBLOCK,XP(C)::QAB1(B)
      • B(a);SBLOCK,XP(D)::QAB1(B)
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