MESON Chess Problem Database

Problem Display
PID: 174507 (1RR5/3p4/2n2P2/1Pkp1K2/5Q2/b7/Bp6/1N6 w - - 0 1)

Volchek, Viktor Fedorovich

2nd Prize, Zvyazda 023. TT, 1996

1RR5/3p4/2n2P2/1Pkp1K2/5Q2/b7/Bp6/1N6

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Rxc6#
  • Tries
    • 1.Qd2?
      • 1...Kd6
        • 2.Qxd5#
      • 1...Bb4
        • 2.Qxd5#
      • 1...d6
        • 2.Rxc6#
        • 2.Qc3#
      • 1...d4!
    • 1.Qe3+?
      • 1...Kb4
        • 2.Qxa3#
      • 1...d4
        • 2.Qxa3#
      • 1...Kd6!
    • 1.Qg3?
      • 1...Kb4
        • 2.Qxa3#
      • 1...Kd4
        • 2.Qc3#
      • 1...d4
        • 2.Qxa3#
      • 1...d6
        • 2.Qc3#
      • 1...Bb4!
    • 1.Qe5?
      • 1...Bb4
        • 2.Qxd5#
      • 1...d6
        • 2.Qc3#
      • 1...Kb4!
    • 1.Qc4+?
      • 1...Kd6
        • 2.Qxd5#
      • 1...dxc4!
    • 1.Qd4+?
      • 1...Kd6
        • 2.Qxd5#
      • 1...Kxd4!
  • Keys
    • 1.Qf3!
      • 1...Kb4
        • 2.Qxa3#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qxd5#
      • 1...Bb4
        • 2.Qxd5#
      • 1...d4
        • 2.Qxa3#
      • 1...d6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(f);N_GUARD::R1(H),XS(e)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(c);N_SPINS(e),P_SPINP(d),S_FLIGHT::QAR1(C),XP(d)
        • B(b);SBLOCK::QAR1(C),XP(d)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT::QAB1(C),XB(b)
        • P(d);P_SPINP(d),SBLOCK::QAB(C),XB(b)
      • Refutation
        • K(c);N_SPINS(e),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT::QAB1(C),XB(b)
        • K(c);N_SPINS(e),S_FLIGHT::QAB1(C)
        • P(d);SBLOCK::QAB(C),XB(b)
        • P(f);SBLOCK::QAR2(C)
      • Refutation
        • B(b);
    • Try
      • Q(C);P_PINP(d)
      • Vars
        • B(b);SBLOCK::QAR1(C),XP(d)
        • P(f);SBLOCK::QAR2(C)
      • Refutation
        • K(c);N_SPINP(d),N_SPINS(e),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT::QAR1(C),XP(d)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(e),P_SPINP(d),S_FLIGHT::QAR1(C),XP(d)
      • Refutation
        • K(c);N_SPINS(e),S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(c);N_SPINS(e),S_FLIGHT::QAB1(C),XB(b)
      • K(c);N_SPINS(e),S_FLIGHT::QAB1(C)
      • K(c);N_SPINS(e),S_FLIGHT::QAR1(C),XP(d)
      • B(b);SBLOCK::QAR1(C),XP(d)
      • P(d);SBLOCK::QAB(C),XB(b)
      • P(f);SBLOCK::QAR2(C)
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).