MESON Chess Problem Database

Problem Display
PID: 205110 (qn1b4/p1PpP3/8/3kNK1p/1PN2P2/2P3pr/5pRr/7B w - - 0 1)

Romanov, Maksim

01. YCCC, 2016

qn1b4/p1PpP3/8/3kNK1p/1PN2P2/2P3pr/5pRr/7B

#2

10 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Bxg2#
    • 1...f1Q
      • 2.Rd2#
    • 1...f1S
      • 2.Rd2#
    • 1...f1B
      • 2.Rd2#
    • 1...f1R
      • 2.Rd2#
    • 1...d6
      • 2.Se3#
  • Tries
    • 1.Rxf2+?
      • 1...Rxh1
        • 2.Rd2#
      • 1...Rg2
        • 2.Bxg2#
        • 2.Rd2#
      • 1...g2!
    • 1.Rxg3+?
      • 1...Rg2
        • 2.Bxg2#
      • 1...Rxh1!
    • 1.cxb8Q?
      • threat
        • 2.Se3#
        • 2.Qd6#
        • 2.Qb5#
        • 2.Qxa8#
      • 1...Bxe7
        • 2.Se3#
        • 2.Qxa8#
      • 1...f1S
        • 2.Rd2#
        • 2.Qd6#
        • 2.Qb5#
        • 2.Qxa8#
      • 1...Qc6
        • 2.Se3#
      • 1...Qb7
        • 2.Se3#
        • 2.Qd6#
        • 2.Qxb7#
      • 1...Bb6
        • 2.Qd6#
        • 2.Qxa8#
      • 1...Bc7
        • 2.Qb5#
        • 2.Qxa8#
      • 1...a6
        • 2.Se3#
        • 2.Qd6#
        • 2.Qxa8#
      • 1...d6
        • 2.Se3#
        • 2.Qxd6#
        • 2.Qb5#
        • 2.Qxa8#
      • 1...Qxb8!
    • 1.cxd8Q?
      • threat
        • 2.Qa5#
        • 2.Qg8#
      • 1...Qb7
        • 2.Qg8#
      • 1...Sa6
        • 2.Qxd7#
        • 2.Qxa8#
      • 1...Sc6
        • 2.Qxd7#
      • 1...a5
        • 2.Qg8#
      • 1...Qc6!
    • 1.c8Q?
      • threat
        • 2.Qc5#
      • 1...Bxe7
        • 2.Qg8#
      • 1...Bb6
        • 2.Qg8#
      • 1...Bc7
        • 2.Qg8#
      • 1...Sa6
        • 2.Qxd7#
        • 2.Qxa8#
      • 1...Sc6
        • 2.Qxd7#
      • 1...d6
        • 2.Se3#
        • 2.Qe6#
      • 1...Qc6!
    • 1.c8S?
      • threat
        • 2.Se3#
      • 1...f1S
        • 2.Rd2#
      • 1...Bb6!
    • 1.exd8Q?
      • threat
        • 2.Qg8#
      • 1...Sa6
        • 2.Qxd7#
        • 2.Qxa8#
      • 1...Sc6
        • 2.Qxd7#
      • 1...Qc6!
  • Keys
    • 1.e8S!
      • threat
        • 2.Se3#
      • 1...f1S
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);OGATE,P_SPINR(b),XR(B)::B(A),XR(b)
    • P(a);OGATE,P_PINP(F)::B(A)+R(B),DCHECK
    • P(a);OGATE::B(A)+R(B),DCHECK
    • P(h);SBLOCK::S(E)
  • Tries
    • Try
      • R(B);CHECK,XP(a)
      • Vars
        • R(b);XB(A)::R(B)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::B(A),XR(b)
      • Refutation
        • R(b);XB(A)
    • Try
      • P(I);XS(j)
      • Threat
        • DUALS(4)
      • Vars
        • Q(i);::S(E)
      • Refutation
        • Q(i);XQ(I)
    • Try
      • P(I);P_PINP(h),XB(k)
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);::QAB(I)
        • S(j);N_GUARD::QAR2(I),XP(h)
        • P(g);::QAB(I)
      • Refutation
        • Q(i);
    • Try
      • P(I);
      • Threat
        • QAR1(I)
      • Vars
        • B(k);OGATE,XP(J)::QAB(I)
        • B(k);OGATE::QAB(I)
        • S(j);N_GUARD::QAR2(I),XP(h)
      • Refutation
        • Q(i);
    • Try
      • P(I);
      • Threat
        • S(E)
      • Vars
        • P(a);OGATE::B(A)+R(B),DCHECK
      • Refutation
        • B(k);
    • Try
      • P(J);P_PINP(h),XB(k)
      • Threat
        • QAB(J)
      • Vars
        • S(j);N_GUARD::QAR2(J),XP(h)
      • Refutation
        • Q(i);
  • Actual
    • P(J);
    • Threat
      • S(E)
    • Vars
      • P(a);OGATE::B(A)+R(B),DCHECK
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).