MESON Chess Problem Database

Problem Display
PID: 240379 (8/1QB2p2/b7/1B1R1p2/R1p1k3/8/q2PK3/5N1n w - - 0 1)

Zilahi, Zoltan

2/3 HM., Tijdschrift vd KNSB, 1933

8/1QB2p2/b7/1B1R1p2/R1p1k3/8/q2PK3/5N1n

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Rxc4#
    • 1...Qa1
      • 2.d3#
    • 1...Qxd2+
      • 2.Sxd2#
    • 1...Qa3
      • 2.Rxc4#
    • 1...Sf2
      • 2.Sg3#
    • 1...Sg3+
      • 2.Sxg3#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Bxf5#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Sg3+
        • 2.Sxg3#
      • 1...f4
        • 2.Bf5#
      • 1...Bxb7!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Bxb7!
    • 1.Re5+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
      • 1...Kf4!
  • Keys
    • 1.Bxc4!
      • threat
        • 2.Bd3#
      • 1...Qxc4+
        • 2.d3#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Bxc4+
        • 2.Rd3#
      • 1...Sg3+
        • 2.Sxg3#
      • 1...Qxa4
        • 2.d3#
      • 1...Bxb7
        • 2.Bxa2#

This is a version of 240378

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD,N_PINP(B)::R(D),XP(c)
    • Q(b);N_PINP(B)::P(B)
    • Q(b);CHECK,XP(B)::S(A),XQ(b)
    • S(a);N_GUARD::S(A)
    • S(a);CHECK,N_GUARD::S(A),XS(a)
  • Tries
    • Try
      • B(E);
      • Threat
        • B(E),XP(e)
      • Vars
        • Q(b);CHECK,XP(B)::S(A),XQ(b)
        • S(a);CHECK,N_GUARD::S(A),XS(a)
        • P(e);::B(E)
      • Refutation
        • B(f);XQ(G)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(G)
      • Refutation
        • B(f);XQ(G)
    • Try
      • R(F);CHECK
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • B(E);P_SPINB(E),XP(c)
    • Threat
      • R(D)+B(E),DCHECK
    • Vars
      • Q(b);CHECK,N_PINP(B),P_SPINQ(b),XB(E)::P(B)
      • Q(b);CHECK,XP(B)::S(A),XQ(b)
      • B(f);CHECK,N_GUARD,P_SPINB(f),XB(E)::QAB(G)+R(F)
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • Q(b);N_PINP(B),XR(D)::P(B)
      • B(f);N_PINB(E),XQ(G)::R(D)+B(E),XQ(b)
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).