MESON Chess Problem Database

Problem Display
PID: 196700 (B7/3Rp3/2PP2N1/1npk1P2/2p5/2P1b3/qp2P1K1/nQ6 w - - 0 1)

Scheel, Johan

2nd Prize, Otto Fuss Ty., 1919

B7/3Rp3/2PP2N1/1npk1P2/2p5/2P1b3/qp2P1K1/nQ6

#2

10 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb1
      • 2.c7#
    • 1...Qb3
      • 2.c7#
    • 1...Bc1
      • 2.e4#
    • 1...Bg1
      • 2.e4#
    • 1...Bd2
      • 2.e4#
    • 1...Bf2
      • 2.e4#
    • 1...Bd4
      • 2.e4#
    • 1...Bf4
      • 2.e4#
    • 1...Bg5
      • 2.e4#
    • 1...Bh6
      • 2.e4#
    • 1...Sa3
      • 2.c7#
      • 2.dxe7#
    • 1...Sxc3
      • 2.dxe7#
    • 1...Sd4
      • 2.dxe7#
    • 1...Sa7
      • 2.dxe7#
    • 1...Sc7
      • 2.dxc7#
      • 2.dxe7#
    • 1...e5
      • 2.Se7#
  • Tries
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qf3#
        • 2.e4#
      • 1...Sd4
        • 2.dxe7#
      • 1...cxd3!
  • Keys
    • 1.Kh3!
      • threat
        • 2.Qh1#
      • 1...Qxb1
        • 2.c7#
      • 1...Sxc3
        • 2.dxe7#
      • 1...Bc1
        • 2.e4#
      • 1...Bg1
        • 2.e4#
      • 1...Sd4
        • 2.dxe7#
      • 1...e5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD,XQ(A)::B(J)+P(F)
    • Q(b);N_GUARD::B(J)+P(F)
    • B(d);OGATE::P(B)
    • S(f);N_GUARD,XP(D)::R(I)+P(G),XP(i)
    • S(f);N_GUARD::R(I)+P(G),XP(i)
    • P(i);SBLOCK::S(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);P_SPINS(f)::R(I)+P(G),XP(i)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • Q(b);N_GUARD,XQ(A)::B(J)+P(F)
      • S(f);N_GUARD,XP(D)::R(I)+P(G),XP(i)
      • B(d);OGATE::P(B)
      • S(f);N_GUARD::R(I)+P(G),XP(i)
      • P(i);SBLOCK::S(H)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).