MESON Chess Problem Database

Problem Display
PID: 18613 (8/4R3/4N1B1/1N2q3/3p4/R2Pk2r/n3n2r/K3BQ2 w - - 0 1)

Lipton, Michael

1st Prize, Deutsche Schachzeitung, 1957

8/4R3/4N1B1/1N2q3/3p4/R2Pk2r/n3n2r/K3BQ2

#2

9 + 7

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Sf4#
    • 1...Qf4
      • 2.Sxf4#
    • 1...Qc7
      • 2.Sexc7#
    • 1...Qg7
      • 2.Sxg7#
    • 1...Qb8
      • 2.Sec7#
    • 1...Qh8
      • 2.Sg7#
    • 1...Qxb5
      • 2.Sc5#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qh5
      • 2.Sg5#
    • 1...Qxe6
      • 2.Rxe6#
    • 1...Rh1
      • 2.Qf2#
    • 1...Rf2
      • 2.Qxf2#
  • Keys
    • 1.Sexd4!
      • threat
        • 2.Rxe5#
      • 1...Qxe7
        • 2.Sc2#
        • 2.Sf5#
      • 1...Rf2
        • 2.Qxf2#
      • 1...Rf3
        • 2.Qxf3#
      • 1...Qe4
        • 2.Sc2#
        • 2.Sf5#
        • 2.Rxe4#
      • 1...Qe6
        • 2.Sc2#
        • 2.Sf5#
        • 2.Rxe6#
      • 1...Rh4
        • 2.Qf3#
      • 1...Rh5
        • 2.Qf3#
      • 1...Sac3
        • 2.Sc2#
      • 1...Sec3
        • 2.Sf5#
      • 1...Sg3
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 12
  • Sets
    • Q(g);::R(I)+S(G)
    • Q(g);::R(I)+S(G),XQ(g)
    • Q(g);XS(F)::R(I)+S(G)
    • Q(g);OGATE,P_SPINQ(g),XS(G)::R(I),XQ(g)
    • R(c);N_GUARD::QAB1(C)
    • R(c);N_GUARD::QAB1(C),XR(c)
  • Actual
    • S(G);P_PINQ(g),P_SPINS(G),XP(f)
    • Threat
      • R(I),XQ(g)
    • Vars
      • R(c);N_GUARD::QAB1(C),XR(c)
      • R(e);N_GUARD::QAR1(C),XR(e)
      • R(e);N_GUARD::QAR1(C)
      • S(a);N_PINS(G)::S(G)
      • S(b);N_PINS(G)::S(G)
      • S(b);S_CUTR(e)::QAR1(C)
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