MESON Chess Problem Database

Problem Display
PID: 172304 (q7/8/8/8/1N6/8/1N1Q4/k1K5 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

q7/8/8/8/1N6/8/1N1Q4/k1K5

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sc2#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sd1#
        • 2.S2d3#
        • 2.Sa4#
        • 2.Sc4#
      • 1...Qh1+
        • 2.Sd1#
      • 1...Qg2
        • 2.Qa3#
      • 1...Qf3
        • 2.S2d3#
      • 1...Qc6
        • 2.Sc4#
      • 1...Qa2
        • 2.Sc2#
      • 1...Qa3
        • 2.Qxa3#
      • 1...Qa4
        • 2.Sd1#
        • 2.S2d3#
        • 2.Sxa4#
        • 2.Sc4#
      • 1...Qc8
        • 2.Sc4#
      • 1...Qh8
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(b);SBLOCK::S(D)
  • Actual
    • Q(C);
    • Threat
      • DUALS(4)
    • Vars
      • Q(b);CHECK,SBLOCK::QAB(C)+S(B)
      • Q(b);N_GUARD::QAR2(C)
      • Q(b);::QAB(C)+S(B)
      • Q(b);P_PINQ(C)::QAB(C)+S(B)
      • Q(b);SBLOCK::S(D)
      • Q(b);N_GUARD,P_PINS(B)::QAR2(C),XQ(b)
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