MESON Chess Problem Database

Problem Display
PID: 60635 (B4K2/1RP5/3p4/b2n1nRN/r2pkB2/r4NP1/b1q1P3/3Q4 w - - 0 1)

Pirrone, Santi

1st Prize, Sinfonie Scacchistiche, 1970

B4K2/1RP5/3p4/b2n1nRN/r2pkB2/r4NP1/b1q1P3/3Q4

#2

11 + 10

3751 FIDE Album (1968-1970) 1977
35 L'Italia Scacchistica 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.exf3#
    • 1...Sc3
      • 2.Sf6#
    • 1...Sde3
      • 2.Sf6#
    • 1...Sb4
      • 2.Sf6#
    • 1...Sb6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sxc7
      • 2.Sf6#
    • 1...Sde7
      • 2.Sf6#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Sf6#
      • 1...Sxg3
        • 2.Qxd4#
      • 1...Qc6
        • 2.Sd2#
      • 1...Qxe2!
    • 1.Qxc2+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...d3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Sf6#
      • 1...Sxg3
        • 2.Bxd5#
      • 1...Qc6
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);OGATE,XS(C)::P(B),XR(c)
    • S(h);N_GUARD::S(G)
    • S(h);N_GUARD::S(G),XS(h)
    • S(h);N_GUARD,XP(I)::S(G)
  • Tries
    • Try
      • R(H);P_PINP(e),P_PINS(h)
      • Threat
        • S(G)
      • Vars
        • S(i);N_GUARD,XP(D)::QAR1(A),XP(e)
        • Q(b);N_GUARD,N_SPINS(h)::S(C)
      • Refutation
        • Q(b);XP(B)
    • Try
      • Q(A);CHECK,XQ(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(A),XR(c)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • R(H);P_PINS(h)
    • Threat
      • S(G)
    • Vars
      • S(i);XP(D)::B(J),XS(h)
      • Q(b);N_GUARD,N_SPINS(h)::QAB1(A)
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Developed and maintained by Brian Stephenson.
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