MESON Chess Problem Database

Problem Display
PID: 241398 (8/1b5B/7Q/2p1Pp1n/2P1k1N1/4p1P1/2K1N1P1/3n3r w - - 0 1)

Hjelle, David

Revista Romana de Sah, 1948

8/1b5B/7Q/2p1Pp1n/2P1k1N1/4p1P1/2K1N1P1/3n3r

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qc6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bc8
      • 2.Qc6#
    • 1...Sb2
      • 2.Qxe3#
    • 1...Sf2
      • 2.Qxe3#
    • 1...Sc3
      • 2.Qxe3#
    • 1...Sxg3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sg7
      • 2.Qf4#
  • Tries
    • 1.Sc3+?
      • 1...Sxc3
        • 2.Qxe3#
      • 1...Kd4!
    • 1.Sf6+?
      • 1...Sxf6
        • 2.Qf4#
      • 1...Kxe5!
    • 1.Qe6?
      • threat
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Sxg3
        • 2.Sf6#
      • 1...Bc8
        • 2.Bxf5#
        • 2.Qd5#
        • 2.Qc6#
      • 1...Sg7
        • 2.Sf6#
      • 1...Rf1!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qd3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sf2
        • 2.Sc3#
      • 1...Sf4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • B(h);N_GUARD::QAB(H)
    • B(h);N_GUARD::QAB(H),XB(h)
    • S(a);N_GUARD::QAR1(H),XP(c)
    • S(g);N_GUARD,XP(D)::QAR1(H)
    • S(g);N_GUARD::QAR1(H),XS(g)
    • S(g);N_GUARD::QAR1(H)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • S(a);XS(B)::QAR1(H),XP(c)
      • Refutation
        • K(d);N_SPINP(f),P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • S(g);XS(F)::QAR1(H)
      • Refutation
        • K(d);N_SPINP(f),P-FLIGHT,XP(G)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD,XP(D)::S(F)
        • S(g);N_GUARD::S(F)
      • Refutation
        • R(b);
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • B(h);N_GUARD::QAB1(H),XB(h)
      • S(a);N_GUARD::S(B)
      • S(g);N_GUARD::S(F)
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