MESON Chess Problem Database

Problem Display
PID: 155970 (3nR3/5PpB/1Q1PR3/2pkN3/r1p2PP1/n1P5/P1p5/2K5 w - - 0 1)

Musante, Horacio Luis

3rd Prize, Die Schwalbe, 1963

3nR3/5PpB/1Q1PR3/2pkN3/r1p2PP1/n1P5/P1p5/2K5

#2

12 + 8

56 The Problemist 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sxe6
      • 2.Qc6#
    • 1...Sb7
      • 2.Qc6#
      • 2.Qxb7#
    • 1...Sxf7
      • 2.Qc6#
      • 2.Qb7#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Be4#
        • 2.Re5#
      • 1...Sxf7
        • 2.Be4#
        • 2.Qb7#
      • 1...Sc6
        • 2.Be4#
      • 1...g6
        • 2.Re5#
      • 1...Sxe6!
    • 1.Sc6?
      • threat
        • 2.Be4#
      • 1...Sxe6
        • 2.Se7#
      • 1...g6!
    • 1.Sg6?
      • threat
        • 2.Re5#
      • 1...Sxe6
        • 2.Se7#
      • 1...Sxf7
        • 2.Qb7#
      • 1...Sc6!
    • 1.Sd7?
      • threat
        • 2.Be4#
        • 2.Re5#
        • 2.Qxc5#
      • 1...Sxf7
        • 2.Be4#
        • 2.Qxc5#
        • 2.Qb7#
      • 1...Ra5
        • 2.Be4#
        • 2.Re5#
      • 1...Sc6
        • 2.Be4#
        • 2.Qxc5#
      • 1...Sb7
        • 2.Be4#
        • 2.Re5#
        • 2.Qxb7#
      • 1...g6
        • 2.Sf6#
        • 2.Re5#
        • 2.Qxc5#
      • 1...Sxe6!
    • 1.Qb7+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sxb7!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Se3#
      • 1...Kxc4
        • 2.Qb3#
      • 1...Rxc4
        • 2.Re5#
      • 1...Sxc4
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD::QAB1(G),XS(h)
    • S(h);N_GUARD,XR(I)::QAB1(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::B(K)
        • P(g);::R1(I)
      • Refutation
        • S(h);XR(I)
    • Try
      • S(F);
      • Threat
        • B(K)
      • Vars
        • S(h);SBLOCK,XR(I)::S(F)
      • Refutation
        • P(g);
    • Try
      • S(F);
      • Threat
        • R1(I)
      • Vars
        • S(h);SBLOCK,XR(I)::S(F)
        • S(h);N_GUARD,XP(J)::QAB(G)
      • Refutation
        • S(h);
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Refutation
        • S(h);XR(I)
    • Try
      • Q(G);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB1(G),XS(h)
      • Refutation
        • S(h);XQ(G)
  • Actual
    • S(F);XP(d)
    • Threat
      • S(F)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(F)::QAB1(G)
      • R(c);SBLOCK,XS(F)::R1(I)
      • S(b);SBLOCK,XS(F)::B(K)
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