MESON Chess Problem Database

Problem Display
PID: 244632 (rBB4n/R1N2pb1/3N1R1p/3Pk3/qpP1pp2/4PP2/3n4/6QK w - - 0 1)

Fasano, Alessandro

Sinfonie Scacchistiche, 2015

rBB4n/R1N2pb1/3N1R1p/3Pk3/qpP1pp2/4PP2/3n4/6QK

#2

12 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qa1#
    • 1...Qc6
      • 2.Qa1#
    • 1...Qd7
      • 2.Qa1#
    • 1...Qe8
      • 2.Qa1#
    • 1...Qa1
      • 2.Qxa1#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Sdb5?
      • threat
        • 2.Rf5#
      • 1...Kxf6
        • 2.Se8#
      • 1...Qxb5
        • 2.Qa1#
      • 1...Bxf6
        • 2.Sxa8#
      • 1...exf3!
    • 1.Se6?
      • threat
        • 2.Rf5#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...Bxf6
        • 2.exf4#
      • 1...fxe6
        • 2.Rxe6#
      • 1...Rxb8!
    • 1.Sce8?
      • threat
        • 2.Sxf7#
        • 2.Rf5#
        • 2.Re7#
        • 2.exf4#
      • 1...Qxe8
        • 2.Rf5#
        • 2.Qa1#
      • 1...Qxa7
        • 2.Sxf7#
        • 2.Rf5#
        • 2.exf4#
      • 1...Rxa7
        • 2.Sb7#
        • 2.Sxf7#
        • 2.Rf5#
        • 2.exf4#
      • 1...Rxb8
        • 2.Rf5#
        • 2.Re7#
        • 2.exf4#
      • 1...Bxf6
        • 2.Sxf7#
      • 1...Sxc4
        • 2.Rf5#
      • 1...exf3
        • 2.Rf5#
        • 2.Re7#
        • 2.exf4#
      • 1...Qd7
        • 2.Sxf7#
        • 2.Qa1#
        • 2.exf4#
      • 1...Bf8
        • 2.Sxf7#
        • 2.Rf5#
        • 2.exf4#
      • 1...Sg6
        • 2.Sxf7#
        • 2.Rf5#
      • 1...fxe3!
  • Keys
    • 1.Scb5!
      • threat
        • 2.Rf5#
      • 1...Kxf6
        • 2.Se8#
      • 1...Bxf6
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::QAB(A)
    • Q(b);N_GUARD,P_PINQ(A)::QAB(A),XQ(b)
    • P(g);N_GUARD::QAR2(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(H)
      • Vars
        • K(f);S_FLIGHT,XR(H)::S(J)
        • Q(b);N_GUARD,XS(G)::QAB(A)
        • B(i);SBLOCK,XR(H)::B(K)+S(J),XR(j)
      • Refutation
        • P(d);XP(D)
    • Try
      • S(J);
      • Threat
        • R1(H)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XR(H)::QAB1(A),XB(i)
        • B(i);SBLOCK,XR(H)::P(C),XP(e)
        • P(h);OGATE,XS(J)::R1(H),XP(h)
      • Refutation
        • R(j);XB(K)
    • Try
      • S(J);
      • Threat
        • DUALS(4)
      • Vars
        • B(i);XR(H)::B(K)+S(G),DCHECK,XP(h)
        • S(a);XP(E)::R1(H)
      • Refutation
        • P(e);XP(C)
  • Actual
    • S(J);
    • Threat
      • R1(H)
    • Vars
      • K(f);S_FLIGHT,XR(H)::S(G)
      • B(i);SBLOCK,XR(H)::B(K)+S(G),DCHECK,XP(h)
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