MESON Chess Problem Database

Problem Display
PID: 122157 (1R2n2q/1b3rB1/p3Np1p/7Q/1k1NBR2/p2P3K/1pP1P3/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problemas, 2000

1R2n2q/1b3rB1/p3Np1p/7Q/1k1NBR2/p2P3K/1pP1P3/8

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qa5#
  • Tries
    • 1.Sc6+?
      • 1...Ka4
        • 2.Bh1#
        • 2.Bg2#
        • 2.Bf3#
        • 2.Bg6#
        • 2.Bh7#
        • 2.Qa5#
      • 1...Kc3!
    • 1.Bc6?
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Qa5#
      • 1...f5
        • 2.Sb3#
      • 1...Qf8!
    • 1.Rxb7+?
      • 1...Kc3
        • 2.Qa5#
      • 1...Ka4
        • 2.Bc6#
      • 1...Rxb7!
    • 1.Qb5+?
      • 1...Kc3
        • 2.Qa5#
      • 1...axb5!
    • 1.c3+?
      • 1...Kxc3
        • 2.Qa5#
      • 1...Ka4!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qa5#
      • 1...Kc3
        • 2.Qc5#
      • 1...Ka4
        • 2.Bc6#
        • 2.Bxb7#
        • 2.Qa5#
      • 1...a5
        • 2.Qxa5#
      • 1...f5
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(g),S_FLIGHT::QAB(H)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(c);N_SPINB(g),P_SPINP(e),S_FLIGHT
    • Try
      • B(F);
      • Threat
        • QAB1(H)
      • Vars
        • K(c);N_SPINB(g),S_FLIGHT::QAB(H)
        • P(e);::R(G)+S(E)
      • Refutation
        • Q(j);
    • Try
      • R(K);CHECK,XB(g)
      • Vars
        • K(c);S_FLIGHT::QAB(H)
        • K(c);P-FLIGHT::B(F)
      • Refutation
        • R(h);XR(K)
    • Try
      • Q(H);CHECK,N_PINB(g)
      • Vars
        • K(c);S_FLIGHT::QAB(H)
      • Refutation
        • P(d);XQ(H)
    • Try
      • P(A);CHECK
      • Vars
        • K(c);N_SPINB(g),S_FLIGHT,XP(A)::QAB(H)
      • Refutation
        • K(c);N_SPINB(g),P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(c);N_SPINB(g),P_SPINP(e),S_FLIGHT::QAR2(H)
      • P(d);::QAB1(H),XP(d)
      • P(e);::R(G)+B(F)
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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).