MESON Chess Problem Database

Problem Display
PID: 169027 (8/2K5/3N3B/Q1p1pP1n/2Pk1b2/2p2p2/3pR3/Nb3B2 w - - 0 1)

Lilu, Zhorzh Aleksandrovich

SuperProblem, 2017

8/2K5/3N3B/Q1p1pP1n/2Pk1b2/2p2p2/3pR3/Nb3B2

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Re4#
    • 1...Ba2
      • 2.Re4#
    • 1...Bd3
      • 2.Sb3#
    • 1...Be4
      • 2.Rxe4#
    • 1...c2
      • 2.Re4#
  • Tries
    • 1.Sb5+?
      • 1...Kd3
        • 2.Re1#
        • 2.Rxe5#
        • 2.Qxc3#
      • 1...Kxc4!
    • 1.Re3?
      • threat
        • 2.Qxc3#
      • 1...Kxe3
        • 2.Qxc5#
      • 1...Bxe3
        • 2.Sb3#
      • 1...Bd3
        • 2.Rxd3#
      • 1...c2
        • 2.Rd3#
        • 2.Re4#
        • 2.Qxd2#
        • 2.Qc3#
      • 1...d1S!
    • 1.Qxc5+?
      • 1...Kd3
        • 2.Re1#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
        • 2.Re3#
        • 2.Re4#
        • 2.Rxe5#
        • 2.Qd5#
      • 1...Kxc5!
  • Keys
    • 1.Rxe5!
      • threat
        • 2.Qxc5#
      • 1...Kxe5
        • 2.Qxc3#
      • 1...Bxe5
        • 2.Sb3#
      • 1...c2
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(e);P-FLIGHT::B(B)+R(C)
    • B(a);N_GUARD::R1(C)
    • B(a);SBLOCK::S(A)
    • B(a);N_GUARD::R1(C),XB(a)
    • P(c);S_CUTB(a)::R1(C)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(e);P-FLIGHT,XP(D)
    • Try
      • R(C);
      • Threat
        • QAB1(E),XP(c)
      • Vars
        • K(e);P_SPINB(f),S_FLIGHT,XR(C)::QAB(E),XP(g)
        • B(f);XR(C)::S(A)
        • B(a);N_GUARD::R1(C),XB(a)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK,XP(g)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
  • Actual
    • R(C);XP(h)
    • Threat
      • QAB1(E),XP(g)
    • Vars
      • K(e);P_SPINP(g),S_FLIGHT,XR(C)::QAB(E),XP(c)
      • B(f);P_PINS(G),SBLOCK,XR(C)::S(A)
      • P(c);S_CUTB(a)::R1(C)
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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).