MESON Chess Problem Database

Problem Display
PID: 271094 (1Nk5/1Rp1B1P1/3p1p2/P2B2r1/K1N3r1/2R4Q/2n3nq/6b1 w - - 0 1)

Sanderse, Jacobus Theodorus

Schakend Nederland, 1983

1Nk5/1Rp1B1P1/3p1p2/P2B2r1/K1N3r1/2R4Q/2n3nq/6b1

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Qh8#
    • 1...Qf4
      • 2.Qh8#
    • 1...Qe5
      • 2.Qh8#
    • 1...Re5
      • 2.g8Q#
      • 2.g8R#
    • 1...Rh5
      • 2.g8Q#
      • 2.g8R#
    • 1...Sd4
      • 2.Sb6#
    • 1...Sf4
      • 2.Sxd6#
  • Keys
    • 1.a6!
      • threat
        • 2.Be6#
      • 1...Rxd5
        • 2.g8Q#
        • 2.g8R#
      • 1...Qe5
        • 2.Qh8#
      • 1...Re5
        • 2.g8Q#
        • 2.g8R#
      • 1...Sd4
        • 2.Sb6#
      • 1...Sf4
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(d);N_GUARD::QAR(B)
    • R(f);N_GUARD::P=Q
    • S(b);N_PINS(D)::S(D)
    • S(c);N_PINS(D)::S(D),XP(g)
  • Actual
    • P(E);
    • Threat
      • B(F)
    • Vars
      • R(f);N_GUARD,XB(F)::P=Q
      • Q(d);N_GUARD::QAR(B)
      • R(f);N_GUARD::P=Q
      • S(b);N_PINS(D)::S(D)
      • S(c);N_PINS(D)::S(D),XP(g)
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