MESON Chess Problem Database

Problem Display
PID: 287244 (B7/3p4/3N3R/K1k2r2/1p4r1/8/2nQ4/8 w - - 0 1)

Michel, Francois

Monreal, Pierre

Themes-64, 1967

B7/3p4/3N3R/K1k2r2/1p4r1/8/2nQ4/8

#2

5 + 6

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sb7#
    • 1...Rf1
      • 2.Qd5#
    • 1...Rf2
      • 2.Qd5#
    • 1...Rf3
      • 2.Qd5#
    • 1...Rf4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rf6
      • 2.Qd5#
    • 1...Rf7
      • 2.Qd5#
    • 1...Rf8
      • 2.Qd5#
    • 1...Sd4
      • 2.Qxb4#
  • Tries
    • 1.Qc3+?
      • 1...Rc4
        • 2.Se4#
        • 2.Qxc4#
      • 1...bxc3!
    • 1.Qxc2+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kd4+!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Sb7#
      • 1...Rd4
        • 2.Qb5#
      • 1...Rg6
        • 2.Se4#
      • 1...Rf6
        • 2.Qd5#
      • 1...Sd4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);SBLOCK::S(C)
    • R(e);N_GUARD::QAR1(A)
    • R(e);N_GUARD::QAR1(A),XR(e)
    • S(a);N_GUARD,S_CUTR(c)::QAB1(A),XP(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);CHECK,XS(a)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(A),XR(c)
      • Refutation
        • K(d);CHECK,S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • R(c);SBLOCK::QAR1(A)
      • R(c);N_GUARD::S(C)
      • R(e);N_GUARD::QAR1(A)
      • S(a);S_CUTR(c)::QAR1(A)
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