MESON Chess Problem Database

Problem Display
PID: 175189 (8/p4Bp1/K1p5/p5Q1/3kp3/p3p3/1b1B4/2Nn4 w - - 0 1)

Mach, Julius Zdenek

Illustracyja Polska, 1902

8/p4Bp1/K1p5/p5Q1/3kp3/p3p3/1b1B4/2Nn4

#2

5 + 10

6490 yacpdb 2018
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bxe3#
    • 1...c5
      • 2.Qd5#
      • 2.Qxg7#
  • Tries
    • 1.Bxe3+?
      • 1...Kc3
        • 2.Qc5#
      • 1...Sxe3!
    • 1.Qf4?
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Sb3#
      • 1...Sc3
        • 2.Bxe3#
      • 1...exd2!
    • 1.Qf6+?
      • 1...Kc5
        • 2.Sb3#
      • 1...gxf6!
    • 1.Qd8+?
      • 1...Kc5
        • 2.Sb3#
      • 1...Ke5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Sb3#
      • 1...exd2
        • 2.Sb3#
      • 1...Sc3
        • 2.Bxe3#

This anticipates 201576(1922)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::B(B),XP(d)
  • Tries
    • Try
      • B(B);CHECK,XP(d)
      • Vars
        • K(e);S_FLIGHT::QAR2(C)
      • Refutation
        • S(a);XB(B)
    • Try
      • Q(C);P_PINP(f)
      • Threat
        • QAR2(C)
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::S(A)
        • S(a);N_GUARD,SBLOCK::B(B),XP(d)
      • Refutation
        • P(d);XB(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::S(A)
      • Refutation
        • P(j);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::S(A)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(e);S_FLIGHT::S(A)
      • P(d);XB(B)::S(A)
      • S(a);N_GUARD,SBLOCK::B(B),XP(d)
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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).