MESON Chess Problem Database
Problem Display
PID: 166356 (b2K4/N1p3R1/5p1Q/R2BP1r1/2pkp1P1/3N1p2/1PP2P1B/8 w - - 0 1)
Hirschenson, Aaron
1st Place, League of Macedonian Problemists, 2011
#2
13 + 8
| 145 | StrateGems | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Qe3#
- 1...Rxe5
- 2.Qe3#
- 1...Rf5
- 2.Qe3#
- 1...Rh5
- 2.Qe3#
- 1...Rg6
- 2.Qe3#
- 1...Rxg7
- 2.Qe3#
- 1...Bxd5
- 2.Sb5#
- 1...Bc6
- 2.Sxc6#
- 1...cxd3
- 2.c3#
- 1...exd3
- 2.c3#
- 1...Rxg4
- Tries
- 1.Sc1?
- threat
- 2.c3#
- 1...c3
- 2.Sb3#
- 1...c5!
- threat
- 1.Sf4?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Se2#
- 2.Se6#
- 1...Rxe5
- 2.c3#
- 1...Bxd5
- 2.Rxd5#
- 1...c5!
- threat
- 1.Bf4?
- threat
- 2.Be3#
- 1...cxd3
- 2.c3#
- 1...exd3
- 2.c3#
- 1...e3
- 2.Bxe3#
- 2.fxe3#
- 1...c5!
- threat
- 1.Bc6?
- threat
- 2.Sb5#
- 2.Rd5#
- 2.Rd7#
- 1...Rxe5
- 2.Qe3#
- 1...Rxg7
- 2.Sb5#
- 2.Rd5#
- 2.Qe3#
- 1...Bxc6
- 2.Sxc6#
- 1...exd3
- 2.Rd7#
- 2.c3#
- 1...c3
- 2.Ra4#
- 1...e3
- 2.Sb5#
- 2.Rd7#
- 1...cxd3!
- threat
- 1.Bxa8?
- threat
- 2.Sb5#
- 2.Sc6#
- 2.Rd5#
- 2.Rd7#
- 1...Rxe5
- 2.Sc6#
- 2.Qe3#
- 1...Rxg7
- 2.Sb5#
- 2.Sc6#
- 2.Rd5#
- 2.Qe3#
- 1...exd3
- 2.Rd7#
- 2.c3#
- 1...c3
- 2.Ra4#
- 1...e3
- 2.Sb5#
- 2.Rd7#
- 1...c5
- 2.Sb5#
- 2.Rd7#
- 1...c6
- 2.Sxc6#
- 2.Rd7#
- 1...cxd3!
- threat
- 1.Rxc7?
- threat
- 2.Rxc4#
- 1...Bxd5
- 2.Sb5#
- 1...cxd3
- 2.Rc4#
- 2.c3#
- 1...c3
- 2.Rc4#
- 2.bxc3#
- 1...Bc6
- 2.Sxc6#
- 1...Rg8+!
- threat
- 1.Rd7?
- threat
- 2.Sb5#
- 2.Bc6#
- 2.Bb7#
- 2.Bxa8#
- 1...Rxe5
- 2.Sb5#
- 2.Qe3#
- 1...Bxd5
- 2.Sb5#
- 2.Sc6#
- 2.Raxd5#
- 2.Rdxd5#
- 1...cxd3
- 2.c3#
- 1...exd3
- 2.Bc6#
- 2.Bb7#
- 2.Bxa8#
- 2.c3#
- 1...c3
- 2.Sb5#
- 2.Ra4#
- 1...Rg7
- 2.Sb5#
- 2.Qe3#
- 1...Bc6
- 2.Sxc6#
- 2.Bxc6#
- 1...Bb7
- 2.Sb5#
- 2.Bc6#
- 2.Bxb7#
- 1...c6
- 2.Bxc6#
- 2.Be6#
- 2.Bf7#
- 2.Bg8#
- 1...Rg8+!
- threat
- 1.Sc1?
- Keys
- 1.Sc5!
- threat
- 2.Se6#
- 1...Kxd5
- 2.Rd7#
- 1...Rxe5
- 2.Qd2#
- 1...Bxd5
- 2.c3#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(e);OGATE,XP(F)::QAB1(J)
- R(e);OGATE,XP(I)::QAB1(J)
- R(e);OGATE::QAB1(J)
- R(e);OGATE,XR(L)::QAB1(J)
- B(h);SBLOCK,XB(H)::S(K)
- B(h);N_GUARD::S(K),XB(h)
- P(b);SBLOCK,XS(E)::P(B)
- P(d);SBLOCK,XS(E)::P(B)
- Tries
- Try
- S(E);
- Threat
- P(B)
- Vars
- P(b);N_GUARD::S(E)
- Refutation
- P(g);
- Try
- S(E);
- Threat
- S(E)
- Vars
- R(e);SBLOCK,XP(I)::P(B)
- B(h);OGATE,XB(H)::R1(G),XB(h)
- Refutation
- P(g);
- Try
- B(D);
- Threat
- B(D)
- Vars
- P(b);SBLOCK,XS(E)::P(B)
- P(d);SBLOCK,XS(E)::P(B)
- Refutation
- P(g);
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- R(e);OGATE,XP(I)::QAB1(J)
- B(h);XB(H)::S(K),XB(h)
- P(b);OGATEB::R(G)
- Refutation
- P(b);XS(E)
- Try
- B(H);XB(h)
- Threat
- DUALS(4)
- Vars
- P(b);OGATEB::R(G)
- Refutation
- P(b);XS(E)
- Try
- R(L);XP(g)
- Threat
- R1(L),XP(b)
- Vars
- B(h);SBLOCK,XB(H)::S(K)
- B(h);N_GUARD::S(K),XB(h)
- Refutation
- R(e);CHECK
- Try
- R(L);
- Threat
- DUALS(4)
- Vars
- P(b);SBLOCK,XS(E)::P(B)
- Refutation
- R(e);CHECK
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(H)::R(L)
- R(e);OGATE,XP(I)::QAR2(J)
- B(h);SBLOCK,XB(H)::P(B)
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).