MESON Chess Problem Database

Problem Display
PID: 227082 (2B5/4r3/7b/6pR/2P1k2r/6Qp/1nKR4/B6b w - - 0 1)

Lobusov, Andrey Jakovlevic

Schweizerische Schachzeitung, 1985

2B5/4r3/7b/6pR/2P1k2r/6Qp/1nKR4/B6b

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rd4#
    • 1...Sd3
      • 2.Re2#
    • 1...Sa4
      • 2.Re2#
      • 2.Rd4#
    • 1...Sxc4
      • 2.Rd4#
    • 1...g4
      • 2.Bf5#
  • Tries
    • 1.Qg4+?
      • 1...Ke3
        • 2.Re2#
      • 1...Ke5
        • 2.Bxb2#
        • 2.Qf5#
      • 1...Rxg4!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Re2#
      • 1...Ke5
        • 2.Qf5#
      • 1...Sxc4
        • 2.Bf5#
      • 1...Bf3
        • 2.Qd4#
      • 1...Sd1
        • 2.Bf5#
      • 1...g4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);::R1(C)
    • S(b);::R(C)
    • S(b);XP(E)::R1(C)
    • P(f);::B(G)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(C)
      • Refutation
        • R(e);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • R(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(f),P_SPINS(b)::QAR1(D)
      • S(b);XP(E)::B(G)
      • B(a);SBLOCK::QAR1(D)
      • S(b);::B(G)
      • P(f);::R1(C)
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