MESON Chess Problem Database

Problem Display
PID: 146925 (4k1b1/nrp2NP1/r2p2P1/1q2N3/Bp4KB/3R3Q/4Rp2/8 w - - 0 1)

Anonymous

Revista de Sah, 1931

4k1b1/nrp2NP1/r2p2P1/1q2N3/Bp4KB/3R3Q/4Rp2/8

#2

10 + 10

5454 Near Snap 2013
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7+
      • 2.Sxd7#
      • 2.Bxd7#
    • 1...Bxf7
      • 2.gxf7#
    • 1...dxe5
      • 2.Rd8#
    • 1...c6
      • 2.Sxd6#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Sf3#
        • 2.Sc4#
        • 2.Qe6#
      • 1...Rxa4
        • 2.Qe6#
      • 1...Bxf7
        • 2.Sxf7#
        • 2.gxf7#
      • 1...dxe5
        • 2.Rd8#
      • 1...f1Q
        • 2.Qe6#
      • 1...f1B
        • 2.Qe6#
      • 1...Rc6
        • 2.Qe6#
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sc8
        • 2.Qxc8#
      • 1...d5
        • 2.Sc6#
      • 1...c5
        • 2.Sd7#
      • 1...c6
        • 2.Sxd6#
      • 1...f1S+!
  • Keys
    • 1.Kh5!
      • threat
        • 2.Qe6#
      • 1...Bxf7
        • 2.gxf7#
      • 1...dxe5
        • 2.Rd8#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sc8
        • 2.Qxc8#
      • 1...d5
        • 2.Sc6#
      • 1...c5
        • 2.Sd7#
      • 1...c6
        • 2.Sxd6#

Anticipated by 31821(1927)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(j);OGATE,XS(I)::P(H),XB(j)
    • P(e);OGATE,P_SPINP(e),XS(G)::R1(B)
    • P(h);N_GUARD,N_SPINQ(c),S_CUTR(d)::S(I),XP(e)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • R(d);N_SPINQ(c),XB(D)::QAR2(C)
        • P(e);OGATE,P_SPINP(e),XS(G)::R1(B)
        • P(a);::QAR2(C)
        • S(f);N_SPINQ(c),S_CUTQ(c)::QAB1(C)
        • S(f);N_GUARD::QAR2(C),XS(f)
        • P(e);::R(A)+S(G)
        • P(h);::R(A)+S(G)
        • P(h);N_GUARD,N_SPINQ(c),S_CUTR(d)::S(I),XP(e)
      • Refutation
        • P(a);CHECK
  • Actual
    • K(E);P_SPINS(G),S_FLIGHT
    • Threat
      • QAR2(C)
    • Vars
      • B(j);OGATE,P_PINP(H),XS(I)::P(H),XB(j)
      • P(e);OGATE,P_SPINP(e),XS(G)::R1(B)
      • S(f);N_SPINQ(c),S_CUTQ(c)::QAB1(C)
      • S(f);N_GUARD::QAR2(C),XS(f)
      • P(e);N_PINS(G)::R(A)+S(G)
      • P(h);N_PINS(G)::R(A)+S(G)
      • P(h);N_GUARD,N_SPINQ(c),S_CUTR(d)::S(I),XP(e)
HTML5 logo

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).