MESON Chess Problem Database

Problem Display
PID: 158461 (4N3/5p1r/1K1p3r/RN1pkP2/1Q1p1Rn1/3P2P1/4p3/3bn1b1 w - - 0 1)

Shanshin, Valery Yurevich

Probleemblad, 2015

4N3/5p1r/1K1p3r/RN1pkP2/1Q1p1Rn1/3P2P1/4p3/3bn1b1

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qxd6#
    • 1...Rh2
      • 2.Qxd6#
    • 1...Rh3
      • 2.Qxd6#
    • 1...Rh4
      • 2.Qxd6#
    • 1...Rh5
      • 2.Qxd6#
    • 1...Bh2
      • 2.Qxd4#
    • 1...Sf2
      • 2.Qxd4#
    • 1...Se3
      • 2.Qxd4#
    • 1...Sf6
      • 2.Qxd6#
    • 1...f6
      • 2.Qxd6#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sc4#
      • 1...Se3
        • 2.Qxd4#
      • 1...Bb3!
    • 1.Sxd4?
      • threat
        • 2.Re4#
      • 1...Bxd4+
        • 2.Qxd4#
      • 1...Sf2
        • 2.Sc6#
      • 1...Sf6
        • 2.Qxd6#
      • 1...Sxd3!
    • 1.Sbc7?
      • threat
        • 2.Rxd5#
      • 1...Se3
        • 2.Qxd4#
      • 1...Sf6
        • 2.Qxd6#
      • 1...Bb3!
    • 1.Re4+?
      • 1...dxe4
        • 2.Sbxd6#
      • 1...Kxf5!
    • 1.f6?
      • threat
        • 2.Qxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Rxf6!
  • Keys
    • 1.Sbxd6!
      • threat
        • 2.Re4#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Sf2
        • 2.Qxd4#
      • 1...Sf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::QAB1(C),XP(i)
    • B(c);N_GUARD::QAB1(C),XP(e)
    • S(f);S_CUTB(c)::QAB1(C),XP(e)
    • S(f);S_CUTR(j)::QAB1(C),XP(i)
    • P(k);S_CUTR(j)::QAB1(C),XP(i)
  • Tries
    • Try
      • S(F);P_PINP(g)
      • Threat
        • S(F)
      • Vars
        • S(f);S_CUTB(c)::QAB1(C),XP(e)
      • Refutation
        • B(a);
    • Try
      • S(F);P_PINP(g),P_SPINS(F),XP(e)
      • Threat
        • R1(D)
      • Vars
        • B(c);CHECK,OGATE,XS(F)::QAB1(C),XB(c)
        • S(f);N_PINS(F)::S(F)
        • S(f);S_CUTR(j)::QAB1(C),XP(i)
      • Refutation
        • S(b);XP(A)
    • Try
      • S(F);P_PINP(g)
      • Threat
        • R1(E),XP(g)
      • Vars
        • S(f);S_CUTB(c)::QAB1(C),XP(e)
        • S(f);S_CUTR(j)::QAB1(C),XP(i)
      • Refutation
        • B(a);
    • Try
      • R(D);CHECK
      • Vars
        • P(g);XR(D)::R(E)+S(F),XP(i)
      • Refutation
        • K(h);P-FLIGHT,XP(G)
    • Try
      • P(G);
      • Threat
        • QAB1(C),XP(i)
      • Vars
        • K(h);P-FLIGHT::QAR1(C),XP(i)
      • Refutation
        • R(j);XP(G)
  • Actual
    • S(F);P_PINP(g),P_SPINS(F),XP(i)
    • Threat
      • R1(D)
    • Vars
      • R(j);CHECK,OGATE,XS(F)::QAB1(C),XR(j)
      • S(f);S_CUTB(c)::QAB1(C),XP(e)
      • S(f);N_PINS(F)::S(F)
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).