MESON Chess Problem Database
Problem Display
PID: 272580 (4R3/R1pp4/NPpk4/2pp1B2/2n1Pp2/N4b2/6n1/KQ6 w - - 0 1)
Shtern, David
Variantim, 2023
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.e5#
- 1...Sd2
- 2.e5#
- 1...Sxa3
- 2.e5#
- 1...Se3
- 2.e5#
- 1...Sa5
- 2.e5#
- 1...Sxb6
- 2.e5#
- 1...d4
- 2.Sxc4#
- 1...cxb6
- 2.Rxd7#
- 1...Sb2
- Tries
- 1.Rxc7?
- threat
- 2.Rxd7#
- 1...Sxb6
- 2.e5#
- 1...Se5!
- threat
- 1.Qb2?
- threat
- 2.Qf6#
- 1...Sxb2
- 2.e5#
- 1...Se5
- 2.Qxe5#
- 1...d4
- 2.Sxc4#
- 1...dxe4!
- threat
- 1.Qb4?
- threat
- 2.Qxc5#
- 1...cxb6
- 2.Rxd7#
- 1...cxb4!
- threat
- 1.Qb5?
- threat
- 2.Qxc5#
- 1...cxb6
- 2.Rxd7#
- 1...cxb5!
- threat
- 1.bxc7?
- threat
- 2.c8S#
- 1...Sb6
- 2.e5#
- 1...dxe4!
- threat
- 1.Rxc7?
- Keys
- 1.Qg1!
- threat
- 2.Qxc5#
- 1...cxb6
- 2.Rxd7#
- 1...Sge3
- 2.Qg6#
- 1...Sce3
- 2.e5#
- 1...d4
- 2.Sxc4#
- threat
- 1.Qg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- S(c);N_GUARD::P(D)
- S(c);N_GUARD,XS(C)::P(D)
- S(c);N_GUARD,XP(G)::P(D)
- P(f);N_GUARD::S(C),XS(c)
- P(i);OGATE,XP(G)::R1(H),XP(j)
- Tries
- Try
- R(H);XP(i)
- Threat
- R1(H),XP(j)
- Vars
- S(c);N_GUARD,XP(G)::P(D)
- Refutation
- S(c);
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- S(c);N_GUARD,XQ(B)::P(D)
- S(c);N_GUARD::QAB1(B),XS(c)
- P(f);N_GUARD::S(C),XS(c)
- Refutation
- P(f);XP(D)
- Try
- Q(B);P_PINP(e)
- Threat
- QAB1(B),XP(e)
- Vars
- P(i);OGATE,XP(G)::R1(H),XP(j)
- Refutation
- P(e);N_SPINP(e),XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B),XP(e)
- Vars
- P(i);OGATE,XP(G)::R1(H),XP(j)
- Refutation
- P(g);XQ(B)
- Try
- P(G);XP(i)
- Threat
- P=S
- Vars
- S(c);N_GUARD::P(D)
- Refutation
- P(f);XP(D)
- Try
- Actual
- Q(B);
- Threat
- QAB1(B),XP(e)
- Vars
- P(i);OGATE,XP(G)::R1(H),XP(j)
- S(a);OGATE::QAR(B)
- S(c);N_GUARD::P(D)
- P(f);N_GUARD::S(C),XS(c)
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).