MESON Chess Problem Database

Problem Display
PID: 194040 (3R4/r2pR1KB/1p1B4/pP1k1bp1/1PN3n1/3P4/Q3N3/2r1b3 w - - 0 1)

Guarini, Carlo

L'Italia Scacchistica, 1917

3R4/r2pR1KB/1p1B4/pP1k1bp1/1PN3n1/3P4/Q3N3/2r1b3

#2

11 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Bg8#
    • 1...Be4
      • 2.Bxe4#
      • 2.Bg8#
      • 2.dxe4#
    • 1...Be6
      • 2.Be4#
    • 1...Sf2
      • 2.Re5#
    • 1...Sh2
      • 2.Re5#
    • 1...Se3
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sf6
      • 2.Re5#
    • 1...Sh6
      • 2.Re5#
  • Tries
    • 1.Rdxd7?
      • threat
        • 2.Se3#
        • 2.Sxb6#
      • 1...Bc3+
        • 2.Se5#
      • 1...Rxc4
        • 2.Qxc4#
        • 2.dxc4#
      • 1...Bxd7
        • 2.Be4#
      • 1...Se3
        • 2.Sxe3#
        • 2.Sxb6#
        • 2.Re5#
      • 1...Rxd7!
  • Keys
    • 1.Re6!
      • threat
        • 2.Se3#
        • 2.Sxb6#
      • 1...Bc3+
        • 2.Se5#
      • 1...dxe6+
        • 2.Bc7#
      • 1...Kxe6
        • 2.Bg8#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...Bxe6
        • 2.Be4#
      • 1...Se3
        • 2.Sxe3#
        • 2.Sxb6#
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • B(f);N_GUARD,XP(C)::B(J)
    • B(f);OGATE::B(J)
    • S(c);N_GUARD::R1(H)
    • S(c);N_GUARD::R1(H),XS(c)
  • Tries
    • Try
      • R(K);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);CHECK,S_CUTR(a)::QAB(A)+S(E)
        • B(f);OGATE,XR(K)::B(J)
      • Refutation
        • R(i);P_PINR(H),XR(K)
  • Actual
    • R(H);
    • Threat
      • DUALS(2)
    • Vars
      • B(b);CHECK,S_CUTR(a)::QAB(A)+S(E)
      • P(j);CHECK,OGATEB,SBLOCK,XR(H)::R(K)+B(G)
      • K(e);OGATEB,S_FLIGHT,XR(H)::B(J)
      • R(a);OGATE,P_SPINR(a),XS(E)::QAB1(A),XR(a)
      • B(f);OGATE,SBLOCK,XR(H)::B(J)
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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).