MESON Chess Problem Database

Problem Display
PID: 67604 (8/1Q4p1/4p1K1/1pPBP3/1B6/n2kP3/P1bP3R/2R3n1 w - - 0 1)

List, Reto

2nd Prize, Die Schwalbe, 1978/II

8/1Q4p1/4p1K1/1pPBP3/1B6/n2kP3/P1bP3R/2R3n1

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Be4#
      • 2.Rc3#
    • 1...Bd1
      • 2.Be4#
      • 2.Rc3#
    • 1...Bb3
      • 2.Be4#
      • 2.Rc3#
    • 1...Ba4
      • 2.Be4#
      • 2.Rc3#
    • 1...Sb1
      • 2.Qxb5#
    • 1...Sc4
      • 2.Be4#
    • 1...exd5
      • 2.Qxd5#
  • Tries
    • 1.Bxa3?
      • threat
        • 2.Qxb5#
      • 1...exd5
        • 2.Qxd5#
      • 1...Bb3
        • 2.Be4#
        • 2.Rc3#
      • 1...Ba4
        • 2.Be4#
        • 2.Rc3#
      • 1...b4
        • 2.Qa6#
        • 2.Qb5#
      • 1...Se2!
    • 1.Bh1?
      • threat
        • 2.Qe4#
      • 1...Kc4+
        • 2.Qe4#
      • 1...Sf3!
    • 1.Bf3?
      • threat
        • 2.Qe4#
      • 1...Kc4+
        • 2.Qe4#
      • 1...Sxf3!
    • 1.Qxb5+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sxb5!
  • Keys
    • 1.Bg2!
      • 1...Ke2+
        • 2.Be4#
      • 1...Kc4+
        • 2.Qe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Bb1
        • 2.Be4#
      • 1...Bd1
        • 2.Be4#
      • 1...Bb3
        • 2.Be4#
      • 1...Ba4
        • 2.Be4#
      • 1...Sf3
        • 2.Bf1#
      • 1...Sh3
        • 2.Bf1#
      • 1...Sb1
        • 2.Qxb5#
      • 1...Sc4
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD::QAB(K),XP(e)
    • S(c);SBLOCK::B(H)
    • P(f);OGATE,XB(H)::QAR2(K),XP(f)
  • Tries
    • Try
      • B(F);XS(c)
      • Threat
        • QAB(K),XP(e)
      • Vars
        • P(f);OGATE,XB(H)::QAR2(K),XP(f)
      • Refutation
        • S(a);
    • Try
      • B(H);
      • Threat
        • QAB1(K)
      • Vars
        • K(d);CHECK,P_SPINB(b),S_FLIGHT::QAR2(K)
      • Refutation
        • S(a);
    • Try
      • B(H);
      • Threat
        • QAB1(K)
      • Vars
        • K(d);CHECK,P_SPINB(b),S_FLIGHT::QAR2(K)
      • Refutation
        • S(a);XB(H)
    • Try
      • Q(K);CHECK,XP(e)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(K),XS(c)
      • Refutation
        • S(c);XQ(K)
  • Actual
    • B(H);
    • Vars
      • K(d);CHECK,S_FLIGHT::R(D)+B(H)
      • K(d);CHECK,P_SPINB(b),S_FLIGHT::QAR2(K)
      • S(a);SBLOCK::QAB1(K)
      • B(b);::B(H)
      • S(a);N_GUARD::B(H)
      • S(c);N_GUARD::QAB(K),XP(e)
      • S(c);SBLOCK::B(H)
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).