MESON Chess Problem Database

Problem Display
PID: 2041 (8/8/8/7p/4p2P/2KNk1p1/3p1pQ1/3B3n w - - 0 1)

Banny, Dimitry Nikolaevich

1/2 Prize, Olympic Ty., 1980

8/8/8/7p/4p2P/2KNk1p1/3p1pQ1/3B3n

#2

5 + 7

3364 Solving in Style 1985
3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...f1Q
      • 2.Qxd2#
    • 1...f1S
      • 2.Qe2#
    • 1...f1B
      • 2.Qxd2#
    • 1...f1R
      • 2.Qxd2#
      • 2.Qe2#
    • 1...exd3
      • 2.Qf3#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qxe4#
      • 1...Kf4
        • 2.Qxe4#
      • 1...f1Q
        • 2.Qxd2#
      • 1...f1B
        • 2.Qxd2#
      • 1...f1R
        • 2.Qxd2#
      • 1...f1S!
  • Keys
    • 1.Sxf2!
      • 1...Kf4
        • 2.Qxe4#
      • 1...Sxf2
        • 2.Qxg3#
      • 1...gxf2
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • P(c);OGATE::QAB1(B),XP(b)
    • P(c);OGATE::QAR1(B)
    • P(f);N_GUARD,XS(D)::QAR1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(B),XP(f)
      • Vars
        • K(d);S_FLIGHT::QAR1(B),XP(f)
        • P(c);OGATE::QAB1(B),XP(b)
      • Refutation
        • P(c);
  • Actual
    • S(D);XP(c)
    • Vars
      • K(d);S_FLIGHT::QAR1(B),XP(f)
      • S(a);N_GUARD,XS(D)::QAR2(B),XP(e)
      • P(e);OGATE,SBLOCK,XS(D)::QAB(B)
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