MESON Chess Problem Database

Problem Display
PID: 6766 (2Bkb2R/2p1N2q/2n4N/1R4B1/Kb2Q2r/p7/8/4r3 w - - 0 1)

Segers, Marcel

1st Prize, L'Italia Scacchistica, 1933

2Bkb2R/2p1N2q/2n4N/1R4B1/Kb2Q2r/p7/8/4r3

#2

8 + 9

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sf7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Bd2
      • 2.Rd5#
    • 1...Bc3
      • 2.Rd5#
    • 1...Ba5
      • 2.Rd5#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Sxc6#
      • 1...Qxe7
        • 2.Sf7#
      • 1...Bxe7
        • 2.Rd5#
      • 1...Sxe7
        • 2.Qa8#
      • 1...Sd4
        • 2.Sc6#
        • 2.Qa8#
      • 1...Sa5
        • 2.Sc6#
        • 2.Qa8#
      • 1...Se5
        • 2.Sc6#
        • 2.Qa8#
      • 1...Sa7
        • 2.Sc6#
      • 1...Sb8
        • 2.Sc6#
      • 1...Qxf5!
  • Keys
    • 1.Be6!
      • threat
        • 2.Sxc6#
      • 1...Qxe7
        • 2.Sf7#
      • 1...Bxe7
        • 2.Rd5#
      • 1...Sxe7
        • 2.Qa8#
      • 1...Sd4
        • 2.Sc6#
        • 2.Qa8#
      • 1...Sa5
        • 2.Sc6#
        • 2.Qa8#
      • 1...Se5
        • 2.Sc6#
        • 2.Qa8#
      • 1...Sa7
        • 2.Sc6#
      • 1...Sb8
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(g);N_GUARD,XQ(B)::S(E)
    • Q(g);N_GUARD::S(E),XQ(g)
    • B(c);N_GUARD,P_PINQ(B)::R(C)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(D)+S(F),DCHECK,XS(e)
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g),XS(F)::S(E)
        • B(c);N_GUARD,N_SPINB(i),P_PINQ(B),P_SPINB(c),XS(F)::R(C)
        • S(e);OGATE,P_PINR(C),P_SPINS(e),XS(F)::QAR(B)
        • S(e);P_PINR(C)::B(D)+S(F),DCHECK
      • Refutation
        • Q(g);XB(G)
  • Actual
    • B(G);
    • Threat
      • B(D)+S(F),DCHECK,XS(e)
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XS(F)::S(E)
      • B(c);N_GUARD,N_SPINB(i),P_PINQ(B),P_SPINB(c),XS(F)::R(C)
      • S(e);OGATE,P_PINR(C),P_SPINS(e),XS(F)::QAR(B)
      • S(e);P_PINR(C)::B(D)+S(F),DCHECK
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