MESON Chess Problem Database

Problem Display
PID: 272871 (6KB/1p2p1n1/4k1p1/2P1NRP1/2p1N3/b5pP/B2RQ2q/1r6 w - - 0 1)

Cristoffanini, Guido

Die Schwalbe, 1932

6KB/1p2p1n1/4k1p1/2P1NRP1/2p1N3/b5pP/B2RQ2q/1r6

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf5
      • 2.Bxc4#
      • 2.Qxc4#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Sxf5
        • 2.Sf8#
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...gxf5
        • 2.Sf2#
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...g2
        • 2.Sg3#
      • 1...Bb2!
    • 1.Sf7?
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Sxf5
        • 2.Sd8#
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...gxf5
        • 2.Sf2#
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...g2
        • 2.Sg3#
      • 1...Bb2!
    • 1.Rf6+?
      • 1...Kxe5
        • 2.Sf2#
      • 1...exf6!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Sxf5
        • 2.Sb2#
      • 1...gxf5
        • 2.Sf2#
      • 1...Bb2
        • 2.Se3#
      • 1...g2
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(H)
      • Vars
        • K(f);N_SPINP(e),OGATEB,S_FLIGHT,XR(H)::QAB1(C)
        • P(d);S_CUTQ(b)::QAR(C)+S(E)
      • Refutation
        • B(c);
    • Try
      • S(G);
      • Threat
        • R1(H)
      • Vars
        • K(f);N_SPINP(e),OGATEB,S_FLIGHT,XR(H)::QAB1(C)
        • P(d);S_CUTQ(b)::QAR(C)+S(E)
      • Refutation
        • B(c);
    • Try
      • R(H);CHECK
      • Vars
        • K(f);N_SPINP(e),P-FLIGHT,S_CUTP(i),XS(G)::QAR(C)+S(E)
      • Refutation
        • P(i);XR(H)
  • Actual
    • S(G);XP(e)
    • Threat
      • R1(H)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XR(H)::QAB1(C)
      • S(j);SBLOCK,XR(H)::B(A)+S(G)
      • P(g);SBLOCK,XR(H)::QAR(C)+S(E)
      • B(c);S_CUTR(a)::B(A)+S(G)
      • P(d);S_CUTQ(b)::QAR(C)+S(E)
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