MESON Chess Problem Database
Problem Display
PID: 248150 (4rr2/1q1Q3n/2p1pp1B/1n2kPp1/2pRNp1N/5p2/2B1bK2/3R4 w - - 0 1)
Shire, David J
StrateGems, 2021
#2
9 + 14
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxe6#
- 1...Rb8
- 2.Qxe6#
- 1...Rc8
- 2.Qxe6#
- 1...Rd8
- 2.Qxe6#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sxd4
- 2.Qxd4#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Ra8
- Tries
- 1.Sd2?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Sxd4
- 2.Sg6#
- 1...gxh4
- 2.Bxf4#
- 1...exf5
- 2.Sg6#
- 1...Sd6
- 2.Qxd6#
- 1...Qb6
- 2.Sg6#
- 1...Qa7
- 2.Sg6#
- 1...Rg8
- 2.Re4#
- 1...Bd3
- 2.Sdxf3#
- 1...Sc3
- 2.Sg6#
- 2.Qd6#
- 1...c5
- 2.Sg6#
- 1...Qxd7!
- threat
- 1.Sc3?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Sxc3
- 2.Sg6#
- 2.Qd6#
- 1...Sxd4
- 2.Sg6#
- 2.Qxd4#
- 1...gxh4
- 2.Bxf4#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Qb6
- 2.Sg6#
- 1...Qa7
- 2.Sg6#
- 1...Rg8
- 2.Re4#
- 1...Sd6
- 2.Sg6#
- 2.Qxd6#
- 1...c5
- 2.Sg6#
- 1...Bd3!
- threat
- 1.Sg3?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Sxd4
- 2.Sg6#
- 2.Qxd4#
- 1...gxh4
- 2.Bxf4#
- 2.Re4#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Qb6
- 2.Sg6#
- 1...Qa7
- 2.Sg6#
- 1...Rg8
- 2.Re4#
- 1...Bd3
- 2.Sxf3#
- 2.Sg6#
- 1...Sc3
- 2.Sg6#
- 2.Qd6#
- 1...Sd6
- 2.Sg6#
- 2.Qxd6#
- 1...c5
- 2.Sg6#
- 1...fxg3+!
- threat
- 1.Sc5?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Sxd4
- 2.Sg6#
- 2.Qxd4#
- 1...gxh4
- 2.Bxf4#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Rg8
- 2.Re4#
- 1...Sc3
- 2.Sg6#
- 2.Qd6#
- 1...Sd6
- 2.Sg6#
- 2.Qxd6#
- 1...Bd3!
- threat
- 1.Sxg5?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Sxd4
- 2.Sg6#
- 2.Qxd4#
- 1...Sxg5
- 2.Sg6#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Bd3
- 2.Sgxf3#
- 1...Qb6
- 2.Sg6#
- 1...Qa7
- 2.Sg6#
- 1...Rg8
- 2.Sf7#
- 2.Re4#
- 1...Sc3
- 2.Sg6#
- 2.Qd6#
- 1...Sd6
- 2.Sg6#
- 2.Qxd6#
- 1...c5
- 2.Sg6#
- 1...fxg5!
- threat
- 1.Sd6?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Bxd1
- 2.Sxc4#
- 1...Sxd6
- 2.Sg6#
- 2.Qxd6#
- 1...gxh4
- 2.Bxf4#
- 2.Re4#
- 1...exf5
- 2.Sg6#
- 2.Qxf5#
- 1...Bd3
- 2.Sxf3#
- 1...Qb6
- 2.Sg6#
- 1...Qa7
- 2.Sg6#
- 1...Rg8
- 2.Sf7#
- 2.Re4#
- 1...Sc3
- 2.Sg6#
- 1...c5
- 2.Sg6#
- 1...Sxd4!
- threat
- 1.Rd5+?
- 1...exd5
- 2.Sg6#
- 1...cxd5!
- 1...exd5
- 1.Sd2?
- Keys
- 1.Sxf6!
- threat
- 2.Sg4#
- 1...Kxf6
- 2.Bg7#
- 1...Rxf6
- 2.Re4#
- 1...Sxf6
- 2.Sg6#
- 1...exf5
- 2.Qxf5#
- 1...g4
- 2.Sxg4#
- threat
- 1.Sxf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- R(m);N_GUARD::QAR1(I),XP(i)
- S(e);N_GUARD::QAB1(I)
- S(e);N_GUARD::QAB1(I),XS(e)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(e);XR(D)::S(F)
- P(g);OGATE,XS(F)::B(H),XP(d)
- P(i);XP(G)::S(F)
- S(e);N_GUARD::QAB1(I),XS(e)
- Q(k);P_PINR(D)::S(F)
- R(n);::R1(D)
- B(a);N_GUARD::S(E),XP(b)
- P(h);::S(F)
- Refutation
- Q(k);XQ(I)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(g);OGATE,XS(F)::B(H),XP(d)
- Q(k);P_PINR(D)::S(F)
- R(n);::R1(D)
- P(h);::S(F)
- Refutation
- B(a);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(k);P_PINR(D)::S(F)
- R(n);::R1(D)
- P(h);::S(F)
- Refutation
- P(d);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(g);OGATE,XS(F)::B(H),XP(d)
- R(n);::R1(D)
- Refutation
- B(a);
- Try
- S(E);XP(g)
- Threat
- DUALS(2)
- Vars
- S(l);XS(E)::S(F)
- B(a);N_GUARD::S(E),XP(b)
- Q(k);P_PINR(D)::S(F)
- P(h);::S(F)
- Refutation
- P(j);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- B(a);N_GUARD,XR(A)::S(E),XP(c)
- B(a);N_GUARD::S(F),XP(b)
- Q(k);P_PINR(D)::S(F)
- S(e);::S(F)
- P(h);::S(F)
- Refutation
- S(e);XR(D)
- Try
- R(D);CHECK
- Vars
- P(i);XR(D)::S(F)
- Refutation
- P(h);XR(D)
- Try
- Actual
- S(E);XP(j)
- Threat
- S(E)
- Vars
- K(f);OGATEB,S_FLIGHT,XS(E)::B(H)
- R(n);SBLOCK,XS(E)::R1(D)
- S(l);SBLOCK,XS(E)::S(F)
- P(i);OGATE,XP(G)::QAR1(I),XP(i)
- P(g);::S(E),XP(g)
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).