MESON Chess Problem Database

Problem Display
PID: 50089 (4K3/3R4/1p2N3/4kP1p/R2N3Q/6n1/6r1/5q1n w - - 0 1)

Makaronets, Leonid

Skakbladet, 2003

4K3/3R4/1p2N3/4kP1p/R2N3Q/6n1/6r1/5q1n

#2

7 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sg7?
      • threat
        • 2.Sc6#
      • 1...Qc1
        • 2.Sf3#
      • 1...Qc4
        • 2.Sf3#
      • 1...Qb5
        • 2.Sf3#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Rc2!
    • 1.Sd8?
      • threat
        • 2.S8c6#
        • 2.Sf7#
      • 1...Qxf5
        • 2.S4c6#
        • 2.S8c6#
      • 1...Qf4
        • 2.Qe7#
      • 1...Qc1
        • 2.Sf7#
      • 1...Qb5
        • 2.Sf7#
      • 1...Qf3
        • 2.Sf7#
      • 1...Rc2
        • 2.Sf7#
      • 1...Qc4!
    • 1.Qf4+?
      • 1...Kf6
        • 2.Rf7#
      • 1...Qxf4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Ke4
        • 2.Re7#
      • 1...Qxf4
        • 2.Qe7#
      • 1...Sxf5
        • 2.Sc6#
      • 1...Se2
        • 2.Sd3#
      • 1...Se4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • S(B)
      • Vars
        • Q(a);N_GUARD::S(B)
        • Q(a);N_GUARD,P_PINR(F)::S(B)
        • Q(a);N_GUARD::S(B),XQ(a)
      • Refutation
        • R(c);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);SBLOCK::QAR2(C)
        • Q(a);::S(E)
        • Q(a);P_PINR(F)::S(E)
        • R(c);::S(E)
      • Refutation
        • Q(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::R1(F)
      • Refutation
        • Q(a);XQ(C)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(e);P-FLIGHT::R(F)
      • Q(a);SBLOCK,XS(E)::QAR2(C)
      • S(d);SBLOCK,XP(D)::S(B)
      • S(d);S_CUTQ(a)::S(E)
      • S(d);SBLOCK::R1(F)
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