MESON Chess Problem Database

Problem Display
PID: 59404 (6B1/1p2B3/p2P3r/QPk4r/n1p1P3/2p1K2p/1bNP4/5b2 w - - 0 1)

Ivanov, Vadim Aleksandrovich

Die Schwalbe, 2005

6B1/1p2B3/p2P3r/QPk4r/n1p1P3/2p1K2p/1bNP4/5b2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.d7#
    • 1...Sb6
      • 2.Qb4#
    • 1...axb5
      • 2.Qc7#
    • 1...b6
      • 2.Qb4#
  • Tries
    • 1.Sb4?
      • threat
        • 2.b6#
      • 1...Sb6
        • 2.bxa6#
      • 1...b6
        • 2.Sxa6#
      • 1...axb5!
    • 1.Sd4?
      • threat
        • 2.b6#
      • 1...axb5
        • 2.Qxb5#
      • 1...Sb6
        • 2.bxa6#
      • 1...b6!
    • 1.Bd8?
      • threat
        • 2.Qb4#
      • 1...Kxd6
        • 2.Qc7#
      • 1...axb5
        • 2.Qc7#
      • 1...Ba3!
    • 1.Bd5?
      • threat
        • 2.b6#
      • 1...axb5
        • 2.Qc7#
      • 1...Sb6
        • 2.Qb4#
        • 2.bxa6#
      • 1...b6
        • 2.Qb4#
      • 1...Rxd5!
    • 1.bxa6+?
      • 1...b5
        • 2.Qc7#
      • 1...Kc6!
  • Keys
    • 1.Bxc4!
      • threat
        • 2.Qc7#
      • 1...Kxc4
        • 2.Qb4#
      • 1...Bxc4
        • 2.d4#
      • 1...Sb6
        • 2.Qb4#
      • 1...b6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(j);N_GUARD::B(H)+P(G)
    • S(e);SBLOCK::QAB1(E)
    • P(i);P_SPINP(i),SBLOCK,XP(F)::QAR2(E)
    • P(k);SBLOCK::QAB1(E)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR(E)+P(F)
      • Vars
        • S(e);S_CUTP(k)::QAR(E)+P(F),XP(i)
        • P(k);N_GUARD::S(A),XP(i)
      • Refutation
        • P(i);P_SPINP(i),XP(F)
    • Try
      • S(A);
      • Threat
        • QAR(E)+P(F)
      • Vars
        • P(i);OGATE,P_SPINP(i),XP(F)::QAR1(E),XP(i)
        • S(e);S_CUTP(k)::QAR(E)+P(F),XP(i)
      • Refutation
        • P(k);
    • Try
      • B(H);
      • Threat
        • QAB1(E)
      • Vars
        • K(g);S_FLIGHT,XP(G)::QAB1(E)
        • P(i);P_SPINP(i),SBLOCK,XP(F)::QAR2(E)
      • Refutation
        • B(b);
    • Try
      • B(I);
      • Threat
        • QAR(E)+P(F)
      • Vars
        • P(i);P_SPINP(i),SBLOCK,XP(F)::QAR2(E)
        • P(k);SBLOCK::QAB1(E)
      • Refutation
        • R(h);XB(I)
    • Try
      • P(F);CHECK,XP(i)
      • Vars
        • P(k);P_SPINP(k),SBLOCK::QAR2(E)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • B(I);XP(f)
    • Threat
      • QAR2(E)
    • Vars
      • K(g);P-FLIGHT,XB(I)::QAR1(E)
      • B(a);SBLOCK,XB(I)::P(B)
      • S(e);SBLOCK::QAB1(E)
      • P(k);SBLOCK::QAB1(E)
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).