MESON Chess Problem Database

Problem Display
PID: 226772 (8/3N4/3NQp2/1rppP3/1r1k1p2/5pRK/nn1BPP2/7B w - - 0 1)

Klemanic, Emil

The Problemist, 2020

8/3N4/3NQp2/1rppP3/1r1k1p2/5pRK/nn1BPP2/7B

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...fxe2
      • 2.Qxd5#
    • 1...fxg3
      • 2.Qg4#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Sf5+?
      • 1...Ke4
        • 2.Sxf6#
        • 2.Bxf3#
        • 2.exf6#
      • 1...Kc4!
    • 1.Bxf3?
      • threat
        • 2.Qxd5#
      • 1...c4
        • 2.Sf5#
      • 1...Sc3!
    • 1.Rxf3?
      • threat
        • 2.Rxf4#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Rb3!
    • 1.Qg4?
      • threat
        • 2.Qxf4#
      • 1...Sc3
        • 2.Be3#
      • 1...Sd3
        • 2.e3#
      • 1...fxe5!
    • 1.Qf5?
      • threat
        • 2.Qxf4#
      • 1...fxg3
        • 2.Qg4#
        • 2.Qf4#
        • 2.e3#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc3!
    • 1.Qxf6?
      • threat
        • 2.Qxf4#
        • 2.e6#
      • 1...fxg3
        • 2.Qh4#
        • 2.Qf4#
        • 2.e6#
      • 1...Sc3
        • 2.e6#
      • 1...Sc4
        • 2.Qxf4#
      • 1...Sd3!
    • 1.exf6?
      • threat
        • 2.Qe5#
      • 1...Sc4
        • 2.Sf5#
      • 1...Sd3!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rxf4#
      • 1...fxe2
        • 2.Qxd5#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sc3
        • 2.Be3#
      • 1...Sd3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);XP(C)::QAR1(I),XP(i)
    • P(f);OGATEB,XR(E)::QAR(I)
    • P(j);OGATE,XP(G)::QAB1(I),XP(j)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(i)
    • Try
      • B(A);XP(c)
      • Threat
        • QAR1(I),XP(i)
      • Vars
        • P(h);SBLOCK::S(H)
      • Refutation
        • S(a);
    • Try
      • R(E);XP(c)
      • Threat
        • R(E),XP(f)
      • Vars
        • P(j);OGATE,XP(G)::QAB1(I),XP(j)
        • S(a);N_GUARD::B(B),XS(a)
        • S(b);N_GUARD::R1(E),XS(b)
      • Refutation
        • R(d);P_PINR(E)
    • Try
      • Q(I);P_PINP(f)
      • Threat
        • QAR2(I),XP(f)
      • Vars
        • S(a);SBLOCK::B(B)
        • S(b);SBLOCK::P(C)
      • Refutation
        • P(j);XP(G)
    • Try
      • Q(I);
      • Threat
        • QAR2(I),XP(f)
      • Vars
        • P(j);OGATE,XP(G)::QAB1(I),XP(j)
        • S(b);N_GUARD::QAR1(I),XS(b)
      • Refutation
        • S(a);
    • Try
      • Q(I);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB(I)+P(G)
        • S(b);::QAR2(I),XP(f)
      • Refutation
        • S(b);
    • Try
      • P(G);XP(j)
      • Threat
        • QAB1(I)
      • Vars
        • S(b);SBLOCK::S(H)
      • Refutation
        • S(b);
  • Actual
    • R(E);P_PINP(f)
    • Threat
      • R(E),XP(f)
    • Vars
      • P(c);XP(C)::QAR1(I),XP(i)
      • P(j);OGATE,XP(G)::QAB1(I),XP(j)
      • S(a);SBLOCK::B(B)
      • S(b);SBLOCK::P(C)
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).