MESON Chess Problem Database

Problem Display
PID: 108412 (8/pK3b2/1np4b/rp3B2/pPPk4/N3Rp2/8/3n2Q1 w - - 0 1)

Henrych, Miroslav

Sachove umeni (Ceskoslovensky sach), 1998

8/pK3b2/1np4b/rp3B2/pPPk4/N3Rp2/8/3n2Q1

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3
      • 2.Qg7#
    • 1...Sxe3
      • 2.Qa1#
  • Tries
    • 1.Rxf3+?
      • 1...Be3
        • 2.Qg7#
      • 1...Sf2
        • 2.Qa1#
      • 1...Se3
        • 2.Qa1#
      • 1...Ke5!
    • 1.Re4+?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kc3!
    • 1.Qg4+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kxe3!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Rd3#
        • 2.Qe5#
        • 2.Qd2#
      • 1...Kxe3
        • 2.Sc2#
      • 1...Bxe3
        • 2.Qh8#
      • 1...Bxc4
        • 2.Qe5#
      • 1...Sxe3
        • 2.Qb2#
      • 1...Sxc4
        • 2.Rd3#
      • 1...bxc4
        • 2.Qd2#
      • 1...f2
        • 2.Rd3#
        • 2.Qe5#
      • 1...Bf4
        • 2.Qxf4#
        • 2.Qd2#
      • 1...Bg7
        • 2.Rd3#
        • 2.Qf4#
        • 2.Qd2#
      • 1...Sb2
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sd7
        • 2.Rd3#
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(i);N_GUARD,P_SPINB(i),SBLOCK,XR(C)::QAB(A)
    • S(a);OGATE,P_SPINS(a),SBLOCK,XR(C)::QAB(A)
  • Tries
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAB(A)
        • S(a);OGATE,P_SPINS(a)::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR2(A),XB(i)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(d);S_FLIGHT,XR(C)::S(B)
      • B(i);OGATE,SBLOCK,XR(C)::QAB(A)
      • B(k);XP(E)::QAB1(A)
      • S(a);N_GUARD,SBLOCK,XR(C)::QAB(A)
      • S(g);XP(E)::R1(C)
      • P(f);XP(E)::QAR2(A)
      • S(a);::QAB1(A)
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).