MESON Chess Problem Database

Problem Display
PID: 15346 (7Q/p4K2/1p3p2/6p1/4p2n/1Np1k1Pn/5r1N/5BB1 w - - 0 1)

Rychkov, Vladimir Nikolaevich

1st Prize, Sverdlovsk Ty., 1982

7Q/p4K2/1p3p2/6p1/4p2n/1Np1k1Pn/5r1N/5BB1

#2

7 + 10

4001 Izbrannie Shakmatny Zadachi Vladimira Rychkova 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Sg4#
    • 1...f5
      • 2.Qxc3#
      • 2.Qd4#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qxc3#
      • 1...c2
        • 2.Qc3#
      • 1...Sf4!
    • 1.Qd8?
      • threat
        • 2.Qd4#
      • 1...Sf3
        • 2.Sg4#
      • 1...Sf5!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Sg4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Sf5
        • 2.Qxc3#
      • 1...g4
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK::S(C)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(b)
      • Vars
        • P(b);::QAR2(G)
      • Refutation
        • S(d);
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • S(f);SBLOCK::S(C)
      • Refutation
        • S(f);
  • Actual
    • Q(G);P_SPINQ(G),XP(i)
    • Threat
      • S(C)
    • Vars
      • S(d);N_PINQ(G)::QAB1(G)
      • S(f);N_PINQ(G)::QAR2(G),XP(b)
      • P(g);::S(C),XP(g)
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