MESON Chess Problem Database

Problem Display
PID: 261880 (8/bQ6/2KnN1r1/3R1p2/2ppk1p1/6R1/2P2P2/6N1 w - - 0 1)

Pirrone, Santi

Correspondence Chess, 1962

8/bQ6/2KnN1r1/3R1p2/2ppk1p1/6R1/2P2P2/6N1

#2

8 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd4+?
      • 1...Bxd4
        • 2.Kxd6#
      • 1...Ke5!
    • 1.Qb4?
      • threat
        • 2.Qe1#
      • 1...c3
        • 2.Re3#
      • 1...d3
        • 2.cxd3#
      • 1...Rxe6!
    • 1.Qxa7?
      • threat
        • 2.Qxd4#
      • 1...d3
        • 2.Re3#
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sb5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh1#
      • 1...Rxe6
        • 2.Rxg4#
      • 1...Rh6
        • 2.Rxg4#
      • 1...f4
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • B(h);XR(E)::QAB(H)+K(F),XS(f)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAR(H)
      • Vars
        • P(a);P_SPINP(b)::R1(D)
        • P(b);OGATE,P_SPINP(a)::P(B),XP(b)
      • Refutation
        • R(g);XS(G)
    • Try
      • Q(H);XB(h)
      • Threat
        • QAR1(H),XP(b)
      • Refutation
        • S(f);P_PINS(G)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • R(g);N_GUARD,P_SPINP(e),XS(G)::R(D),XP(d)
      • R(g);N_GUARD,P_SPINP(e)::R(D),XP(d)
      • P(e);P_SPINR(g),SBLOCK::S(G)
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