MESON Chess Problem Database

Problem Display
PID: 259197 (4Q2n/5p1b/n3BP2/r7/5k1B/5P2/2p2K2/4R3 w - - 0 1)

Pirrone, Santi

1st HM., L'Italia Scacchistica, 1964

4Q2n/5p1b/n3BP2/r7/5k1B/5P2/2p2K2/4R3

#2

7 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Re4#
    • 1...Be4
      • 2.Rxe4#
    • 1...Bg8
      • 2.Re4#
    • 1...Sc5
      • 2.Qb8#
    • 1...Sg6
      • 2.Re4#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sg6
        • 2.Qe4#
      • 1...Rxd5!
    • 1.Qg8?
      • threat
        • 2.Bg3#
        • 2.Qg3#
        • 2.Qg4#
      • 1...Bxg8
        • 2.Re4#
      • 1...fxe6
        • 2.Qg4#
      • 1...Be4
        • 2.Bg3#
        • 2.Rxe4#
        • 2.Qg3#
      • 1...Rg5
        • 2.Bxg5#
        • 2.Qxg5#
      • 1...Bf5
        • 2.Bg3#
        • 2.Bg5#
        • 2.Qg3#
        • 2.Qg5#
      • 1...Sg6
        • 2.Re4#
      • 1...Bg6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Bxf5
        • 2.Qe3#
      • 1...Ra4
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sc5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(c);S_CUTB(f)::R1(A)
    • B(f);N_GUARD::R1(A),XB(f)
    • B(f);N_GUARD::R1(A)
    • S(d);N_GUARD,S_CUTR(c)::QAB(G)
    • S(g);S_CUTB(f)::R1(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);P-FLIGHT,S_CUTB(f)::QAB1(G)
        • B(f);N_GUARD::QAR1(G),XB(f)
        • S(g);S_CUTB(f)::QAR1(G)
      • Refutation
        • R(c);XB(E)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • B(f);N_GUARD,XQ(G)::R1(A)
        • P(e);XB(E)::QAR1(G)
        • S(g);S_CUTB(f)::R1(A)
      • Refutation
        • B(f);
  • Actual
    • B(E);
    • Threat
      • QAR1(G)
    • Vars
      • K(b);P-FLIGHT,XB(E)::QAB1(G)
      • B(f);SBLOCK,XB(E)::QAB1(G)
      • R(c);N_GUARD::QAB1(G)
      • R(c);N_GUARD::QAB1(G),XR(c)
      • S(d);S_CUTR(c)::QAB1(G)
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