MESON Chess Problem Database

Problem Display
PID: 235256 (3Q2br/2RN4/1P1b1B1P/3k1P1N/2pp1p2/1r3P2/1p5K/q2B4 w - - 0 1)

Heyl, Peter

Gaudium, 2011

3Q2br/2RN4/1P1b1B1P/3k1P1N/2pp1p2/1r3P2/1p5K/q2B4

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qa8#
    • 1...Qc1
      • 2.Qa8#
    • 1...Qxd1
      • 2.Qa8#
    • 1...Qa8
      • 2.Qxa8#
    • 1...Rxf3
      • 2.Bxf3#
    • 1...Rxb6
      • 2.Sxb6#
    • 1...Rxh6
      • 2.Qxg8#
    • 1...Ba3
      • 2.Sc5#
    • 1...Bb4
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Be5
      • 2.Sxe5#
    • 1...Bf8
      • 2.Sxf8#
    • 1...c3
      • 2.Bxb3#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sxf4#
      • 1...Rxf3
        • 2.Bxf3#
      • 1...Rxh6
        • 2.Qxg8#
      • 1...Qc1
        • 2.Qa8#
      • 1...d3!
    • 1.Sb8?
      • threat
        • 2.Sxf4#
      • 1...Rxf3
        • 2.Bxf3#
      • 1...Rxh6
        • 2.Qxg8#
      • 1...Qc1!
    • 1.Sf8?
      • threat
        • 2.Sxf4#
      • 1...Rxf3
        • 2.Bxf3#
      • 1...Qc1
        • 2.Qa8#
      • 1...Rxh6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sxf4#
      • 1...Rxf3
        • 2.Bxf3#
      • 1...Rxh6
        • 2.Qxg8#
      • 1...c3
        • 2.Bxb3#
      • 1...Qc1
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::QAB(K)
    • Q(a);N_GUARD,XB(A)::QAB(K)
    • Q(a);N_GUARD::QAB(K),XQ(a)
    • R(c);OGATE,XP(C)::B(A),XR(c)
    • R(c);XP(F)::S(J),XR(c)
    • R(j);N_GUARD,P_PINS(E),XP(H)::QAB(K),XB(i)
    • B(h);::QAR(K)+S(J)
    • B(h);::QAR(K)+S(J),XB(h)
    • P(d);OGATEB::B(A),XR(c)
  • Tries
    • Try
      • S(J);P_PINB(h)
      • Threat
        • S(E),XP(f)
      • Vars
        • R(c);OGATE,XP(C)::B(A),XR(c)
        • R(j);N_GUARD,P_PINS(E),XP(H)::QAB(K),XB(i)
        • Q(a);N_GUARD::QAB(K)
      • Refutation
        • P(e);
    • Try
      • S(J);P_PINB(h)
      • Threat
        • S(E),XP(f)
      • Vars
        • R(c);OGATE,XP(C)::B(A),XR(c)
        • R(j);N_GUARD,P_PINS(E),XP(H)::QAB(K),XB(i)
      • Refutation
        • Q(a);
    • Try
      • S(J);P_PINB(h)
      • Threat
        • S(E),XP(f)
      • Vars
        • R(c);OGATE,XP(C)::B(A),XR(c)
        • Q(a);N_GUARD::QAB(K)
      • Refutation
        • R(j);P_PINS(E),XP(H)
  • Actual
    • S(J);P_PINB(h)
    • Threat
      • S(E),XP(f)
    • Vars
      • R(c);OGATE,XP(C)::B(A),XR(c)
      • R(j);N_GUARD,P_PINS(E),XP(H)::QAB(K),XB(i)
      • P(d);OGATEB::B(A),XR(c)
      • Q(a);N_GUARD::QAB(K)
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).