MESON Chess Problem Database

Problem Display
PID: 231409 (8/8/3p4/3Kp3/4B1p1/1p2kpP1/1Pp1p3/2R1Q3 w - - 0 1)

Fleischer, Gyula

Ujsag, 1927

8/8/3p4/3Kp3/4B1p1/1p2kpP1/1Pp1p3/2R1Q3

#2

6 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qc3#
  • Tries
    • 1.Bd3?
      • 1...Kxd3
        • 2.Qc3#
      • 1...f2
        • 2.Qxe2#
      • 1...e4!
    • 1.Bf5?
      • 1...f2
        • 2.Qc3#
      • 1...e4!
    • 1.Bg6?
      • 1...f2
        • 2.Qc3#
      • 1...e4!
    • 1.Bh7?
      • 1...f2
        • 2.Qc3#
      • 1...e4!
    • 1.Qb4?
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f2
        • 2.Qc3#
      • 1...Kf2!
    • 1.Qa5?
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f2
        • 2.Qc3#
      • 1...Kf2!
  • Keys
    • 1.Qh1!
      • 1...Kd2
        • 2.Qh6#
      • 1...Kf2
        • 2.Qg1#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f2
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAR2(B)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(d);N_SPINP(b),OGATEB,P-FLIGHT,XB(E)::QAR1(B)
        • P(e);N_GUARD::QAR1(B),XP(b)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • P(e);SBLOCK::QAR2(B)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • P(e);SBLOCK::QAR2(B)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • P(e);SBLOCK::QAR2(B)
      • Refutation
        • P(g);
    • Try
      • Q(B);N_PINP(b)
      • Vars
        • P(b);OGATEB::QAR2(B),XQ(b)
        • P(b);OGATEB::QAR2(B),XS(b)
        • P(b);OGATEB::QAR2(B),XB(b)
        • P(b);OGATEB::QAR2(B),XR(b)
        • P(e);SBLOCK::QAR2(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);N_PINP(b)
      • Vars
        • P(b);OGATEB::QAR2(B),XQ(b)
        • P(b);OGATEB::QAR2(B),XS(b)
        • P(b);OGATEB::QAR2(B),XB(b)
        • P(b);OGATEB::QAR2(B),XR(b)
        • P(e);SBLOCK::QAR2(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);N_PINP(b)
    • Vars
      • K(d);S_FLIGHT::QAB(B)
      • K(d);S_FLIGHT::QAB1(B)
      • P(b);OGATEB::QAR2(B),XQ(b)
      • P(b);OGATEB::QAR2(B),XS(b)
      • P(b);OGATEB::QAR2(B),XB(b)
      • P(b);OGATEB::QAR2(B),XR(b)
      • P(e);SBLOCK::QAB(B)
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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).