MESON Chess Problem Database

Problem Display
PID: 275482 (2n1r3/2Bp1RN1/3n2p1/5qP1/RNb1Pk1b/2Pp1P2/3P4/K5QB w - - 0 1)

Gavriliv, Evgeni M

Vasilenko, Anatoly Grigorovich

Problemist Ukraini, 2023

2n1r3/2Bp1RN1/3n2p1/5qP1/RNb1Pk1b/2Pp1P2/3P4/K5QB

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qg4#
    • 1...Ba2
      • 2.Sxd3#
    • 1...Bb3
      • 2.Sxd3#
    • 1...Bd5
      • 2.Sxd3#
    • 1...Be6
      • 2.Sxd3#
    • 1...Bxf7
      • 2.Sxd3#
    • 1...Bxg5
      • 2.Qh2#
    • 1...Se7
      • 2.Bxd6#
  • Tries
    • 1.Sd5+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Bxd5!
    • 1.Sh5+?
      • 1...gxh5
        • 2.Rxf5#
      • 1...Ke5!
    • 1.Bxd6+?
      • 1...Re5
        • 2.Qg4#
      • 1...Sxd6!
    • 1.Ra5?
      • threat
        • 2.Qg4#
      • 1...Bxf7
        • 2.Sxd3#
      • 1...Bd5
        • 2.Sxd3#
      • 1...Bg3
        • 2.Qe3#
      • 1...Bb5!
    • 1.Qe3+?
      • 1...Ke5
        • 2.exf5#
      • 1...Kg3!
  • Keys
    • 1.e5!
      • threat
        • 2.Sxd3#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Sxf7
        • 2.Sd5#
      • 1...Bg3
        • 2.Qe3#
      • 1...Se4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(j);N_SPINS(f),SBLOCK::QAR1(B)
    • B(b);N_GUARD::S(H),XP(a)
    • B(b);N_GUARD,N_SPINQ(e),XR(L)::S(H),XP(a)
    • B(d);N_GUARD,SBLOCK,XP(J)::QAB(B)
    • S(i);N_GUARD,S_CUTR(j)::B(K),XS(f)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINQ(e),S_CUTB(b),S_FLIGHT::QAB1(B)
      • Refutation
        • B(b);XS(H)
    • Try
      • S(M);CHECK
      • Vars
        • P(g);XS(M)::R1(L),XQ(e)
      • Refutation
        • K(c);N_SPINQ(e),S_FLIGHT
    • Try
      • B(K);CHECK,XS(f)
      • Vars
        • R(j);P_SPINR(j)::QAR1(B)
      • Refutation
        • S(i);XB(K)
    • Try
      • R(G);
      • Threat
        • QAR1(B)
      • Vars
        • B(b);N_GUARD,N_SPINQ(e),XR(L)::S(H),XP(a)
        • B(b);N_GUARD::S(H),XP(a)
        • B(d);SBLOCK::QAB1(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINQ(e),S_CUTR(j),S_FLIGHT::QAR(B)+P(I),XQ(e)
      • Refutation
        • K(c);N_SPINQ(e),S_FLIGHT
  • Actual
    • P(I);N_PINS(f)
    • Threat
      • S(H),XP(a)
    • Vars
      • K(c);N_GUARD,N_SPINQ(e),P_SPINS(f),S_FLIGHT,XP(I)::QAB1(B)
      • S(f);N_SPINQ(e),XR(L)::S(H)
      • B(d);SBLOCK::QAB1(B)
      • S(f);::QAR1(B)
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).