MESON Chess Problem Database

Problem Display
PID: 233215 (b7/6r1/n3Q3/8/2NkP2n/B7/2P4b/K2N4 w - - 0 1)

Makaronets, Leonid

Freie Presse, 1980

b7/6r1/n3Q3/8/2NkP2n/B7/2P4b/K2N4

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sc5
      • 2.Bb2#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Sb3#
      • 1...Be5
        • 2.Qc4#
      • 1...Rb7
        • 2.Sc6#
        • 2.Qd5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Bb2#
      • 1...Rg3!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Sb2#
        • 2.Se3#
      • 1...Bxe5!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sb3#
      • 1...Rg3
        • 2.Qf6#
      • 1...Rb7
        • 2.Qd5#
      • 1...Be5
        • 2.Qc4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);S_CUTB(f)::QAR1(G)
    • B(f);N_GUARD::QAR1(G),XB(f)
    • S(d);SBLOCK::B(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(a);SBLOCK::QAR1(G)
        • B(f);N_GUARD::QAR1(G),XB(f)
        • S(d);SBLOCK::B(D)
      • Refutation
        • R(e);
    • Try
      • Q(G);CHECK
      • Refutation
        • B(a);XQ(G)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(e);S_CUTB(a)::QAB(G)
      • R(e);S_CUTB(f)::QAR1(G)
      • B(a);SBLOCK::QAR1(G)
      • B(f);N_GUARD::QAR1(G),XB(f)
      • S(d);SBLOCK::B(D)
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