MESON Chess Problem Database

Problem Display
PID: 233448 (b1n4b/1N2B3/2p5/4k1Kp/2Q1N2p/6p1/5P2/2n2r1q w - - 0 1)

Makarenko, Petr Leontevich

Freie Presse, 1990

b1n4b/1N2B3/2p5/4k1Kp/2Q1N2p/6p1/5P2/2n2r1q

#2

6 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.f4#
    • 1...Re1
      • 2.f4#
    • 1...Rg1
      • 2.f4#
    • 1...Bf6+
      • 2.Bxf6#
    • 1...Sb6
      • 2.Bd6#
    • 1...Sd6
      • 2.Bxd6#
    • 1...Sa7
      • 2.Bd6#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sd7#
      • 1...Bxf6+
        • 2.Bxf6#
      • 1...Qh3
        • 2.Qe4#
      • 1...Rd1
        • 2.f4#
      • 1...Sb6
        • 2.Bd6#
      • 1...Qd5!
    • 1.Sbc5?
      • threat
        • 2.Sd7#
      • 1...Bf6+
        • 2.Bxf6#
      • 1...Rd1
        • 2.f4#
      • 1...Sb6
        • 2.Bd6#
      • 1...Qh3!
  • Keys
    • 1.Sec5!
      • threat
        • 2.Sd7#
      • 1...Bf6+
        • 2.Bxf6#
      • 1...Qd5
        • 2.Qf4#
      • 1...Qh3
        • 2.Qe4#
      • 1...Rd1
        • 2.f4#
      • 1...Sb6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::P(A)
    • B(k);CHECK,N_GUARD::B(F),XB(k)
    • S(j);N_GUARD::B(F)
    • S(j);N_GUARD::B(F),XS(j)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • B(k);CHECK,OGATE,XS(C)::B(F),XB(k)
        • Q(c);N_GUARD::QAR1(B)
        • R(b);N_GUARD::P(A)
        • S(j);N_GUARD::B(F)
      • Refutation
        • Q(c);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(k);CHECK,N_GUARD::B(F),XB(k)
        • R(b);N_GUARD::P(A)
        • S(j);N_GUARD::B(F)
      • Refutation
        • Q(c);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(k);CHECK,N_GUARD::B(F),XB(k)
      • Q(c);SBLOCK::QAB1(B)
      • Q(c);N_GUARD::QAR1(B)
      • R(b);N_GUARD::P(A)
      • S(j);N_GUARD::B(F)
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