MESON Chess Problem Database

Problem Display
PID: 90429 (1B6/N1N3p1/2B1p1P1/p1k1p3/P1p1P3/2p5/2P3p1/2Q3Kb w - - 0 1)

Truck, Hugo

Die Schwalbe, 1957

1B6/N1N3p1/2B1p1P1/p1k1p3/P1p1P3/2p5/2P3p1/2Q3Kb

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Sa6#
    • 1...Kd4
      • 2.Sxe6#
    • 1...Kb6
      • 2.Qe3#
    • 1...Kd6
      • 2.Qa3#
  • Tries
    • 1.Sc8?
      • 1...Kb4
        • 2.Sa6#
      • 1...Kd4
        • 2.Sxe6#
        • 2.Ba7#
      • 1...Kxc6!
    • 1.Scb5?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kb6!
    • 1.Sd5?
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qe3#
      • 1...exd5!
    • 1.Sa6+?
      • 1...Kd4
        • 2.Sb5#
      • 1...Kb6!
    • 1.Sxe6+?
      • 1...Kb4
        • 2.Bd6#
      • 1...Kb6!
    • 1.Sa8?
      • 1...Kb4
        • 2.Bd6#
      • 1...Kd4!
    • 1.Qb2?
      • threat
        • 2.Sxe6#
      • 1...Kd4
        • 2.Qb6#
      • 1...Kd6
        • 2.Qa3#
      • 1...cxb2!
    • 1.Qd2?
      • 1...Kb4
        • 2.Qd6#
      • 1...Kb6
        • 2.Qe3#
        • 2.Qf2#
      • 1...cxd2!
    • 1.Qe3+?
      • 1...Kd6
        • 2.Sd5#
      • 1...Kb4!
    • 1.Qf4?
      • 1...Kb4
        • 2.Qf8#
      • 1...Kd4
        • 2.Sxe6#
        • 2.Qf2#
      • 1...Kb6
        • 2.Qe3#
        • 2.Qf2#
      • 1...Kd6
        • 2.Qf8#
      • 1...exf4!
    • 1.Qb1?
      • threat
        • 2.Sxe6#
      • 1...Kd4
        • 2.Qb6#
      • 1...Kd6!
    • 1.Qd1?
      • 1...Kb4
        • 2.Qd6#
      • 1...Kb6!
  • Keys
    • 1.Qg5!
      • 1...Kb4
        • 2.Qe7#
      • 1...Kd4
        • 2.Sxe6#
      • 1...Kb6
        • 2.Qe3#
      • 1...Kd6
        • 2.Sa6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::S(I)
    • K(f);S_FLIGHT::S(I),XP(h)
    • K(f);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • S(H);
      • Vars
        • K(f);S_FLIGHT::S(I)
      • Refutation
        • K(f);P-FLIGHT,XB(F)
    • Try
      • S(I);
      • Vars
        • K(f);S_FLIGHT::QAB1(A)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(I);
      • Threat
        • QAB(A)
      • Vars
        • K(f);S_FLIGHT::QAB1(A)
      • Refutation
        • P(h);XS(I)
    • Try
      • S(I);CHECK
      • Vars
        • K(f);S_FLIGHT::S(H)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(I);CHECK,XP(h)
      • Vars
        • K(f);S_FLIGHT::B(J)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(I);
      • Vars
        • K(f);S_FLIGHT::B(J)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(I),XP(h)
      • Vars
        • K(f);P_SPINP(c),S_FLIGHT::QAB(A)
        • K(f);S_FLIGHT::QAB(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(f);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(f);S_FLIGHT::B(J)+S(I)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(f);S_FLIGHT::QAB(A)
        • K(f);P_SPINP(g),S_FLIGHT::QAB(A)
      • Refutation
        • P(g);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(I),XP(h)
      • Vars
        • K(f);S_FLIGHT::QAB(A)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(f);S_FLIGHT::QAB(A)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(A);P_PINP(g)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT::QAB(A)
      • K(f);N_SPINP(g),S_FLIGHT::S(I),XP(h)
      • K(f);N_SPINP(g),S_FLIGHT::B(J)+S(I)
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).