MESON Chess Problem Database

Problem Display
PID: 168984 (5BK1/p1p4Q/2B5/5NR1/2kp4/R1p2n2/1Pppp3/n1rb2b1 w - - 0 1)

Popov, Grigory Leontievich

Storozhenko, Ivan Ivanovich

SuperProblem, 2016

5BK1/p1p4Q/2B5/5NR1/2kp4/R1p2n2/1Pppp3/n1rb2b1

#2

8 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...cxb2
      • 2.Qf7#
    • 1...d3
      • 2.Rxc3#
      • 2.Qf7#
  • Tries
    • 1.Se3+?
      • 1...Bxe3
        • 2.Bb5#
      • 1...dxe3!
    • 1.Sd6+?
      • 1...Kb4
        • 2.Rb5#
      • 1...cxd6!
    • 1.Rg4?
      • threat
        • 2.Rxc3#
      • 1...Kd3
        • 2.Bb5#
      • 1...cxb2
        • 2.Qf7#
      • 1...Sb3!
    • 1.Qd7?
      • threat
        • 2.Bb5#
      • 1...Kd3
        • 2.Rxc3#
      • 1...a6!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Ra4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Bxd4
        • 2.Bb5#
      • 1...Sxd4
        • 2.Rxc3#
      • 1...cxb2
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(h);XP(A)::QAB(F)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(d);XS(C)::B(E)
      • Refutation
        • P(k);XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R1(D)
      • Refutation
        • P(m);XS(C)
    • Try
      • R(D);P_PINP(k)
      • Threat
        • R1(B),XP(h)
      • Vars
        • K(j);N_SPINP(k),P_SPINP(h),S_FLIGHT::B(E)
        • P(h);XP(A)::QAB(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • B(E)
      • Vars
        • K(j);P_SPINP(h),S_FLIGHT::R1(B),XP(h)
      • Refutation
        • P(l);
  • Actual
    • S(C);XP(k)
    • Threat
      • R(B)
    • Vars
      • K(j);OGATEB,P-FLIGHT,XS(C)::QAR1(F)
      • B(d);SBLOCK,XS(C)::B(E)
      • S(i);SBLOCK,XS(C)::R1(B),XP(h)
      • P(h);XP(A)::QAB1(F)
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).