MESON Chess Problem Database
Problem Display
PID: 166165 (2b1Q2B/8/P2P1Npp/KRN1nk2/p7/4PnR1/r1r5/1B6 w - - 0 1)
Shire, David J
2nd HM., StrateGems, 2016
#2
11 + 9
| 145 | StrateGems | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bxa6
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Bb7
- 2.Qe6#
- 1...Sd3
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 2.Qe6#
- 1...Sf7
- 2.Qe4#
- 1...Bxa6
- Tries
- 1.Sb3?
- threat
- 2.Qxc8#
- 1...Bxa6
- 2.Qd7#
- 1...Be6
- 2.Qxg6#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Sxd4#
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Sd4#
- 2.Rxe5#
- 2.Qxe5#
- 1...g5
- 2.Rxf3#
- 1...axb3+!
- threat
- 1.Sd3?
- threat
- 2.e4#
- 1...Re2
- 2.Qxc8#
- 1...Bb7
- 2.Qd7#
- 1...Sd2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rc4!
- threat
- 1.Sxa4?
- threat
- 2.Qxc8#
- 1...Bxa6
- 2.Qd7#
- 1...Be6
- 2.Qxg6#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Rxe5#
- 2.Qxe5#
- 1...g5
- 2.Rxf3#
- 1...Rxa4+!
- threat
- 1.Sce4?
- threat
- 2.Rxf3#
- 1...Rf2
- 2.Qxc8#
- 1...Se1
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg1
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rc5!
- threat
- 1.Se6?
- threat
- 2.Rxf3#
- 2.e4#
- 1...Bxe6
- 2.Qxg6#
- 1...Se1
- 2.Sd4#
- 2.e4#
- 1...Sg1
- 2.Sd4#
- 2.e4#
- 1...Sd2
- 2.Sd4#
- 1...Sh2
- 2.Sd4#
- 2.e4#
- 1...Sd4
- 2.Sxd4#
- 2.e4#
- 1...Sh4
- 2.Sd4#
- 2.e4#
- 1...Sg5
- 2.Sd4#
- 1...Bb7!
- threat
- 1.Bxc2+?
- 1...Sd3
- 2.Bxd3#
- 2.Qe4#
- 1...Rxc2!
- 1...Sd3
- 1.Sb3?
- Keys
- 1.Sb7!
- threat
- 2.Qxc8#
- 1...Bxb7
- 2.Qd7#
- 1...Be6
- 2.Qxg6#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Rxe5#
- 2.Qxe5#
- 1...g5
- 2.Rxf3#
- threat
- 1.Sb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(i);N_GUARD,XP(G)::QAB1(J)
- B(i);N_GUARD::QAB1(J),XB(i)
- B(i);N_GUARD::QAB1(J)
- S(e);N_SPINR(b),OGATE::QAB1(J)
- S(e);OGATE::QAB1(J)
- Tries
- Try
- S(F);P_PINS(e)
- Threat
- QAB(J),XB(i)
- Vars
- B(i);N_GUARD,XP(G)::QAB(J)
- B(i);SBLOCK::QAB1(J),XP(g)
- B(i);N_GUARD::QAB(J)
- B(i);N_GUARD::QAB(J),XB(i)
- P(g);SBLOCK::R(C),XS(c)
- Refutation
- P(d);CHECK,XS(F)
- Try
- S(F);N_PINR(b),P_PINS(e)
- Threat
- P(B)
- Vars
- R(b);N_GUARD::QAB(J),XB(i)
- B(i);N_GUARD::QAB(J)
- Refutation
- R(b);
- Try
- S(F);P_PINS(e),P_SPINS(F),XP(d)
- Threat
- QAB(J),XB(i)
- Vars
- B(i);N_GUARD,XP(G)::QAB(J)
- B(i);SBLOCK::QAB1(J),XP(g)
- B(i);N_GUARD::QAB(J)
- B(i);N_GUARD::QAB(J),XB(i)
- P(g);SBLOCK::R(C),XS(c)
- Refutation
- R(a);CHECK,XS(F)
- Try
- S(F);N_PINR(b),P_PINS(e)
- Threat
- R(C),XS(c)
- Vars
- R(b);N_GUARD::QAB(J),XB(i)
- Refutation
- R(b);N_SPINS(e),P_PINR(E)
- Try
- S(F);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- B(i);SBLOCK,XS(F)::QAB1(J),XP(g)
- S(c);N_GUARD::S(F)
- Refutation
- B(i);
- Try
- B(A);CHECK,XR(b)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(F);P_PINS(e)
- Threat
- QAB(J),XB(i)
- Vars
- B(i);N_GUARD,XS(F)::QAB(J)
- B(i);SBLOCK::QAB1(J),XP(g)
- B(i);N_GUARD::QAB(J),XB(i)
- P(g);SBLOCK::R(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).