MESON Chess Problem Database

Problem Display
PID: 119389 (6Kn/7N/8/2B1kp2/8/1Q3P2/3Pn1N1/1b6 w - - 0 1)

Ezdin, Jurij

Vecherni Kisinev, 1983

6Kn/7N/8/2B1kp2/8/1Q3P2/3Pn1N1/1b6

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.d4#
    • 1...Sg1
      • 2.d4#
    • 1...Sc3
      • 2.d4#
    • 1...Sg3
      • 2.d4#
    • 1...Sf4
      • 2.d4#
  • Tries
    • 1.Sf8?
      • threat
        • 2.Sd7#
        • 2.Qe6#
      • 1...f4
        • 2.Qe6#
      • 1...Ba2
        • 2.Sd7#
      • 1...Sd4
        • 2.Sd7#
      • 1...Sf4
        • 2.Sd7#
      • 1...Kf6!
    • 1.Qb8+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kd5!
    • 1.f4+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Sf6#
      • 1...Sxf4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qb8#
      • 1...Kxf4
        • 2.Bd6#
      • 1...Sxf4
        • 2.d4#
      • 1...Ba2
        • 2.Sd3#
      • 1...Sf7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::P(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR1(C)
        • B(a);P_PINQ(C)::S(F)
        • S(b);::S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • S(b);XP(D)
  • Actual
    • S(B);
    • Threat
      • QAB(C)
    • Vars
      • K(c);S_FLIGHT,XS(B)::B(E)
      • S(b);N_GUARD,SBLOCK,XS(B)::P(A)
      • B(a);N_GUARD,P_PINQ(C)::S(B)
      • S(e);N_GUARD::S(B)
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