MESON Chess Problem Database

Problem Display
PID: 24317 (6q1/8/5rnQ/1N1p4/2rpk1B1/3n1NP1/5BP1/3R1K2 w - - 0 1)

Albrecht, Hermann

Lipton, Michael

1st Prize, Piran, 1958

6q1/8/5rnQ/1N1p4/2rpk1B1/3n1NP1/5BP1/3R1K2

#2

9 + 8

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sd6#
    • 1...Rf5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rf7
      • 2.Sd6#
    • 1...Rf8
      • 2.Sd6#
    • 1...Sde5
      • 2.Sg5#
    • 1...Sge5
      • 2.Sd2#
  • Tries
    • 1.Sc3+?
      • 1...dxc3
        • 2.Qe3#
      • 1...Rxc3!
    • 1.Bf5+?
      • 1...Rxf5
        • 2.Sd6#
      • 1...Kxf5!
  • Keys
    • 1.Bxd4!
      • threat
        • 2.Qe3#
      • 1...Rxf3+
        • 2.gxf3#
      • 1...Rxd4
        • 2.Sc3#
      • 1...Rf4
        • 2.Sd6#
      • 1...Sdf4
        • 2.Sg5#
      • 1...Sgf4
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(f);N_GUARD::S(H)
    • R(f);N_GUARD::S(H),XR(f)
    • S(a);SBLOCK::S(E)
    • S(g);SBLOCK::S(E)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • P(c);XS(H)::QAR1(I)
      • Refutation
        • R(b);XS(H)
    • Try
      • B(G);CHECK
      • Vars
        • R(f);XB(G)::S(H)
      • Refutation
        • K(d);S_FLIGHT,XB(G)
  • Actual
    • B(C);P_SPINS(E),XP(c)
    • Threat
      • QAR1(I)
    • Vars
      • R(f);CHECK,OGATE,XS(E)::P(D),XR(f)
      • R(b);N_GUARD,XB(C)::S(H)
      • R(f);N_GUARD::S(H)
      • S(a);N_PINS(E)::S(E)
      • S(g);N_PINS(E)::S(E)
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