MESON Chess Problem Database

Problem Display
PID: 172231 (8/8/8/8/1p5Q/kbN5/8/K2B4 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/8/8/8/1p5Q/kbN5/8/K2B4

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sb5#
    • 1...Ba4
      • 2.Sb1#
    • 1...Bc4
      • 2.Sb1#
    • 1...Bd5
      • 2.Sb1#
      • 2.Sb5#
    • 1...Be6
      • 2.Sb1#
      • 2.Sb5#
    • 1...Bf7
      • 2.Sb1#
      • 2.Sb5#
    • 1...Bg8
      • 2.Sb1#
      • 2.Sb5#
  • Tries
    • 1.Bxb3?
      • 1...bxc3
        • 2.Qa4#
      • 1...Kxb3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxb3#
      • 1...Bxd1
        • 2.Qa2#
      • 1...Bxc4
        • 2.Sb1#
      • 1...Ba2
        • 2.Sb5#
        • 2.Qxa2#
        • 2.Qa6#
      • 1...Bc2
        • 2.Qa2#
      • 1...Ba4
        • 2.Sb1#
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(b);::S(C)
  • Tries
    • Try
      • B(B);XB(b)
      • Vars
        • P(c);OGATE,XS(C)::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XB(b)
    • Vars
      • B(b);OGATE,XB(B)::QAR1(D)
      • B(b);XQ(D)::S(C)
      • B(b);OGATE::QAR1(D)
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