MESON Chess Problem Database

Problem Display
PID: 139633 (8/8/8/1nQ2b2/N5BB/1p6/1R2P3/n2k1K2 w - - 0 1)

Arinushkin, Pavel A

Rochade Europa, 2000

8/8/8/1nQ2b2/N5BB/1p6/1R2P3/n2k1K2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.e3#
      • 2.e4#
    • 1...Bd3
      • 2.exd3#
    • 1...Bg6
      • 2.e3#
      • 2.e4#
    • 1...Bh7
      • 2.e3#
      • 2.e4#
  • Tries
    • 1.Rb1+?
      • 1...Kd2
        • 2.Be1#
        • 2.Bg5#
        • 2.Qc1#
      • 1...Bxb1!
    • 1.Qf2?
      • threat
        • 2.Qe1#
      • 1...Kc1
        • 2.Qe1#
      • 1...Sc2!
    • 1.Qe3?
      • threat
        • 2.Qd2#
      • 1...Sc2
        • 2.Rb1#
      • 1...Bc2!
    • 1.Qb4?
      • threat
        • 2.Qe1#
        • 2.Qd2#
      • 1...Kc1
        • 2.Qe1#
        • 2.Qd2#
      • 1...Bc2
        • 2.Qe1#
      • 1...Sc2
        • 2.Rb1#
      • 1...Sc3!
    • 1.Qc3?
      • threat
        • 2.Rd2#
        • 2.Qe1#
        • 2.Qd2#
      • 1...Bc2
        • 2.Qe1#
      • 1...Sc2
        • 2.Rb1#
      • 1...Sxc3!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Rd2#
        • 2.Qc1#
      • 1...Bc2
        • 2.e4#
      • 1...Sc2
        • 2.Rb1#
      • 1...Sc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);OGATE,P_PINP(C)::B(E)+P(C),XB(e)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • B(e);XR(B)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT::QAR2(G)
      • Refutation
        • S(a);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • S(a);SBLOCK,S_CUTB(e)::R(B)
      • Refutation
        • B(e);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAR1(G)
        • S(a);SBLOCK,S_CUTB(e)::R(B)
      • Refutation
        • S(d);
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • B(e);::QAR1(G)
        • S(a);S_CUTB(e)::R(B)
      • Refutation
        • S(d);XQ(G)
  • Actual
    • B(F);
    • Threat
      • DUALS(2)
    • Vars
      • B(e);N_GUARD::B(E)+P(C)
      • S(a);S_CUTB(e)::R(B)
      • S(d);N_GUARD::S(D),XS(d)
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).