MESON Chess Problem Database

Problem Display
PID: 231482 (8/1p6/bpk1P3/1Np5/Q1K3p1/1P4B1/8/8 w - - 0 1)

Schiffert, Gyorgy

Uj Nemezdek, 1927

8/1p6/bpk1P3/1Np5/Q1K3p1/1P4B1/8/8

#2

6 + 6

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb5+
      • 2.Qxb5#
  • Tries
    • 1.Kd3?
      • 1...c4+
        • 2.Qxc4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Bxb5+!
    • 1.Bh2?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...g3!
    • 1.Bf4?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...g3!
    • 1.Be5?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...g3!
    • 1.Bb8?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...g3!
    • 1.Qb4?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...cxb4!
    • 1.Qa5?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...bxa5!
    • 1.b4?
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...cxb4!
    • 1.e7?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...Bxb5+
        • 2.Qxb5#
      • 1...Kd7!
  • Keys
    • 1.Kc3!
      • 1...Kd5
        • 2.Sc7#
      • 1...Bxb5
        • 2.Qe4#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);CHECK,N_PINS(E),OGATEB::QAR2(C),XP(b)
        • K(e);S_FLIGHT::QAB1(C)
      • Refutation
        • B(c);CHECK,P_SPINB(c),XS(E)
    • Try
      • B(B);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(a);
    • Try
      • B(B);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(a);
    • Try
      • B(B);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(a);
    • Try
      • B(B);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Vars
        • B(c);CHECK,OGATE,XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(b);XQ(C)
    • Try
      • Q(C);
      • Vars
        • B(c);CHECK,OGATE,XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(d);XQ(C)
    • Try
      • P(A);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • P(b);XP(A)
    • Try
      • P(F);
      • Threat
        • P=Q
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(E)::QAB1(C),XB(c)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • K(D);N_SPINS(E),P-FLIGHT
    • Vars
      • K(e);S_FLIGHT::S(E)
      • B(c);P_SPINB(c),SBLOCK,XS(E)::QAB(C)
      • P(b);OGATEB::QAR2(C),XP(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).