MESON Chess Problem Database

Problem Display
PID: 63405 (2b3Nb/1r2pQ2/1BBP3N/r3k3/3p4/p2P4/8/K4R2 w - - 0 1)

Kapralos, Demetrius N

Sinfonie Scacchistiche, 1975

2b3Nb/1r2pQ2/1BBP3N/r3k3/3p4/p2P4/8/K4R2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Ra6
      • 2.Qd5#
    • 1...Raa7
      • 2.Qd5#
    • 1...Ra8
      • 2.Qd5#
    • 1...Be6
      • 2.Qf4#
    • 1...exd6
      • 2.Re1#
    • 1...e6
      • 2.Qf4#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Sf7#
      • 1...exd6
        • 2.Qe2#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Be6
        • 2.Qh2#
      • 1...e6
        • 2.Qh2#
      • 1...Kxd6!
    • 1.Qg6?
      • threat
        • 2.Sf7#
      • 1...exd6
        • 2.Qe4#
      • 1...Be6
        • 2.Qg3#
      • 1...e6
        • 2.Qg3#
      • 1...Bf6!
    • 1.Qxe7+?
      • 1...Be6
        • 2.Sg4#
        • 2.Sf7#
        • 2.Rf5#
      • 1...Rxe7!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Sf7#
      • 1...exd6
        • 2.Bxd4#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Be6
        • 2.Qxd4#
      • 1...e6
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::QAR1(H)
    • R(c);N_GUARD::QAR1(H),XR(c)
    • B(g);SBLOCK::QAB1(H)
    • P(f);SBLOCK,XP(F)::R(B)
    • P(f);SBLOCK::QAB1(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • S(G)
      • Vars
        • P(f);SBLOCK,XP(F)::QAR(H)
        • R(c);N_GUARD::QAR1(H),XR(c)
        • B(g);SBLOCK::QAB(H)
        • P(f);SBLOCK::QAB(H)
      • Refutation
        • K(d);S_FLIGHT,XP(F)
    • Try
      • Q(H);
      • Threat
        • S(G)
      • Vars
        • P(f);SBLOCK,XP(F)::QAR1(H)
        • B(g);SBLOCK::QAB(H)
        • P(f);SBLOCK::QAB(H)
      • Refutation
        • B(h);
    • Try
      • Q(H);CHECK,XP(f)
      • Refutation
        • R(e);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT,XP(F)::S(G)
      • P(f);SBLOCK,XP(F)::B(D),XP(b)
      • R(c);N_GUARD::QAR1(H),XR(c)
      • B(g);SBLOCK::QAB1(H),XP(b)
      • P(f);SBLOCK::QAB1(H),XP(b)
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