MESON Chess Problem Database

Problem Display
PID: 275331 (b2b4/2p5/2N3p1/1p1kN3/8/1K5B/3PPB2/1Q2n3 w - - 0 1)

Caratsch, Alfredo

Die Tat, 1955

(First published on Sat Jun 18 1955)

b2b4/2p5/2N3p1/1p1kN3/8/1K5B/3PPB2/1Q2n3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Bxc6
        • 2.e4#
      • 1...Sc2
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Be7
        • 2.Sxe7#
      • 1...b4
        • 2.Sxb4#
      • 1...bxc4+!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Sf7#
        • 2.Qd4#
      • 1...Kxe4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Bxc6
        • 2.e4#
      • 1...Sc2
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Be7
        • 2.Sxe7#
      • 1...b4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAR2(A)
    • S(a);N_GUARD::QAR2(A),XS(a)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(H)
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XS(H)::QAB(A)
        • B(f);SBLOCK,XS(H)::P(C)
        • S(a);OGATE::QAB(A)
        • B(g);N_GUARD::S(H),XB(g)
        • P(b);::S(H),XP(b)
      • Refutation
        • P(b);CHECK,XS(G)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • S(G);
    • Threat
      • S(H)
    • Vars
      • K(c);N_GUARD,S_FLIGHT,XS(H)::QAB(A)
      • B(f);SBLOCK,XS(H)::P(C)
      • S(a);OGATE::QAB(A)
      • B(g);N_GUARD::S(H),XB(g)
      • P(b);::S(H),XP(b)
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