MESON Chess Problem Database

Problem Display
PID: 235558 (4n3/4R2p/2Rrb2k/KQp1N2P/p3N3/2Bp4/q2p4/3B4 w - - 0 1)

Hannelius, Jan Ingvar

Skakbladet, 1945

4n3/4R2p/2Rrb2k/KQp1N2P/p3N3/2Bp4/q2p4/3B4

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Bxd2#
    • 1...Qb3
      • 2.Bxd2#
    • 1...Qc4
      • 2.Bxd2#
    • 1...Qd5
      • 2.Bxd2#
    • 1...Qa1
      • 2.Bxd2#
    • 1...Qa3
      • 2.Bxd2#
    • 1...Rd5
      • 2.Sf7#
    • 1...Rd7
      • 2.Sf7#
    • 1...Rd8
      • 2.Sf7#
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qe3#
      • 1...Bg4
        • 2.Sxg4#
      • 1...Bf7
        • 2.Sg4#
      • 1...Qd5
        • 2.Bxd2#
      • 1...Rd4
        • 2.Sg4#
      • 1...Rd5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::B(B),XP(b)
    • R(f);P_SPINB(g)::S(F)
  • Actual
    • Q(E);XP(e)
    • Threat
      • QAB(E)
    • Vars
      • B(g);N_GUARD,P_SPINR(f)::S(F),XB(g)
      • B(g);N_GUARD,P_SPINR(f)::S(F)
      • Q(a);N_GUARD,P_PINQ(E)::B(B),XP(b)
      • R(f);P_SPINB(g)::S(F)
      • R(f);P_PINQ(E),P_SPINB(g)::S(F)
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