MESON Chess Problem Database

Problem Display
PID: 229615 (3R4/8/1P1N1K2/1PpNpP1p/2Pk2bR/Pp2n3/rn3Q2/B1b2B2 w - - 0 1)

Trommler, Sven

9th Place, The Macedonian Problemist League, 2020

3R4/8/1P1N1K2/1PpNpP1p/2Pk2bR/Pp2n3/rn3Q2/B1b2B2

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Qxd2#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sdc3#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Be2
        • 2.Sxe3#
      • 1...Bxf5!
    • 1.Bxb2+?
      • 1...Bxb2
        • 2.Qxe3#
        • 2.Qd2#
      • 1...Rxb2!
    • 1.Rxg4+?
      • 1...e4
        • 2.Rxe4#
      • 1...hxg4!
    • 1.Qe1?
      • threat
        • 2.Qc3#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Sd1
        • 2.Qe4#
        • 2.Qxe5#
      • 1...Sxd5+!
    • 1.Qg3?
      • threat
        • 2.Qxe5#
      • 1...Sxf1
        • 2.Qc3#
      • 1...Sxc4
        • 2.Qd3#
      • 1...e4
        • 2.Qe5#
      • 1...Sxd5+!
    • 1.Qf3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Sxd5+!
    • 1.Qf4+?
      • 1...e4
        • 2.Qe5#
        • 2.Qxe4#
      • 1...exf4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sde4#
      • 1...Kxc3
        • 2.Se4#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...Sd3
        • 2.Se2#
      • 1...e4
        • 2.Sdxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR2(C),XB(a)
  • Tries
    • Try
      • S(K);N_PINB(g)
      • Threat
        • R(M)+S(H)
      • Vars
        • K(f);N_SPINS(c),P-FLIGHT,P_SPINB(g),XS(K)::S(H)
        • B(g);::R(M)+S(H),XS(e)
      • Refutation
        • B(g);XP(I)
    • Try
      • B(A);CHECK,P_PINS(e),XS(c)
      • Refutation
        • R(b);XB(A)
    • Try
      • R(F);CHECK,XB(g)
      • Vars
        • P(i);P_SPINP(i)::R1(F),XP(i)
      • Refutation
        • P(j);XR(F)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • S(e);OGATE,XP(E)::QAR1(C)
        • B(a);N_GUARD::QAR2(C),XB(a)
      • Refutation
        • S(e);CHECK,XS(H)
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XP(i)
      • Vars
        • S(e);OGATE,XB(B)::QAB1(C)
        • S(e);OGATE,XP(E)::QAR1(C)
        • P(i);N_SPINB(g)::QAB1(C)
      • Refutation
        • S(e);CHECK,XS(H)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(i);N_SPINB(g)::QAR1(C),XP(i)
      • Refutation
        • S(e);CHECK,XS(H)
    • Try
      • Q(C);CHECK,N_PINB(g)
      • Refutation
        • P(i);XQ(C)
  • Actual
    • S(H);N_PINS(c),P_PINS(e)
    • Threat
      • R(M)+S(K)
    • Vars
      • K(f);N_SPINB(g),N_SPINS(e),P_SPINS(c),S_FLIGHT,XS(H)::S(K)
      • S(c);XP(E)::R(M)+S(K),XS(c)
      • S(c);SBLOCK::B(A)+S(H),DCHECK
      • P(i);N_SPINB(g)::R(M)+S(K),XP(i)
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).