MESON Chess Problem Database

Problem Display
PID: 190234 (8/4n2q/KN2p3/N1k1P3/3r3r/2Pp4/1P3R2/3b2B1 w - - 0 1)

Makaronets, Leonid

Schweizerische Schachzeitung, 1972

8/4n2q/KN2p3/N1k1P3/3r3r/2Pp4/1P3R2/3b2B1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rdf4
      • 2.Rxf4#
  • Tries
    • 1.Rf4?
      • threat
        • 2.Bxd4#
        • 2.b4#
      • 1...Rxf4
        • 2.b4#
      • 1...Bb3
        • 2.Bxd4#
      • 1...Qe4
        • 2.b4#
      • 1...Sd5
        • 2.Bxd4#
      • 1...Sf5
        • 2.b4#
      • 1...Sc6!
    • 1.Rf7?
      • threat
        • 2.b4#
      • 1...Sd5
        • 2.Sd7#
      • 1...Sc6
        • 2.Sb7#
      • 1...Bb3!
  • Keys
    • 1.Rc2!
      • threat
        • 2.b4#
      • 1...Sd5
        • 2.Sa4#
      • 1...Sc6
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATEB::B(A)+R(C),XR(c)
  • Tries
    • Try
      • R(C);P_PINR(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XR(C)::P(B)
        • B(a);::B(A),XR(c)
        • Q(h);::P(B)
        • S(g);::B(A),XR(c)
        • S(g);::P(B)
      • Refutation
        • S(g);
    • Try
      • R(C);P_PINR(c)
      • Threat
        • P(B)
      • Vars
        • S(g);SBLOCK::S(H)
        • S(g);SBLOCK::S(E)
      • Refutation
        • B(a);
  • Actual
    • R(C);P_PINR(c)
    • Threat
      • P(B)
    • Vars
      • S(g);SBLOCK::S(H)
      • S(g);SBLOCK::S(E)
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