MESON Chess Problem Database
Problem Display
PID: 133433 (1B4Kb/1B1N1Q2/4R1p1/2P3p1/2Pk4/3qN1pR/1PP1P2n/1b6 w - - 0 1)
Navon, Emanuel
3rd Comm., Israel Ring Ty., 2007
#2
13 + 8
| 721 | Variantim | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qxe2
- 2.Re4#
- 1...Qxc4
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.c3#
- 1...Qd1
- 2.Re4#
- 2.c3#
- 1...Qd2
- 2.Re4#
- 1...Qa3
- 2.Re4#
- 1...Qb3
- 2.Re4#
- 1...Qc3
- 2.Re4#
- 1...Qxe3
- 2.Rd6#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...g2
- 2.Rd6#
- 1...Qxe2
- Tries
- 1.Ba7?
- threat
- 2.c6#
- 1...Qxc4
- 2.Re4#
- 1...Qxe3
- 2.Rd6#
- 1...Qf5
- 2.c3#
- 1...Qa3
- 2.Re4#
- 1...Qb3
- 2.Re4#
- 1...Be5!
- threat
- 1.Rxg3?
- threat
- 2.Rd6#
- 1...Qxc4
- 2.Re4#
- 1...Qf5
- 2.c3#
- 1...Qe4
- 2.Rxe4#
- 2.c3#
- 1...Be5
- 2.Bxe5#
- 1...Sf3!
- threat
- 1.Re5?
- threat
- 2.Qd5#
- 1...Qxc4
- 2.Re4#
- 2.Qxc4#
- 1...Qe4
- 2.Rxe4#
- 1...Bxe5!
- threat
- 1.Re7?
- threat
- 2.Qd5#
- 1...Qxc4
- 2.Re4#
- 2.Qxc4#
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.c3#
- 1...Be5!
- threat
- 1.Re8?
- threat
- 2.Qd5#
- 1...Qxc4
- 2.Re4#
- 2.Qxc4#
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.c3#
- 1...Be5!
- threat
- 1.Qf3?
- threat
- 2.Rd6#
- 2.Qd5#
- 1...Qxc4
- 2.Qe4#
- 1...Qxe3
- 2.Qd5#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 2.c3#
- 1...Qf5
- 2.c3#
- 1...Be5
- 2.Bxe5#
- 1...Sxf3!
- threat
- 1.Qf4+?
- 1...Qe4
- 2.Rxe4#
- 2.Rd6#
- 2.Qxe4#
- 2.c3#
- 1...gxf4!
- 1...Qe4
- 1.Qf5?
- threat
- 2.Qxd3#
- 2.Qd5#
- 1...Qxc2
- 2.Qd5#
- 1...Qxe2
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 2.c3#
- 1...Qxc4
- 2.Qe4#
- 1...Qxf5
- 2.c3#
- 1...Qxe3
- 2.Qd5#
- 1...Bxc2
- 2.Qd5#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Be5
- 2.Qxd3#
- 2.Qxe5#
- 1...Qd1
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 2.c3#
- 1...Qd2
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qa3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qb3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qc3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...gxf5!
- threat
- 1.Ba7?
- Keys
- 1.Qf2!
- threat
- 2.Rd6#
- 1...Qxc4
- 2.Sf5#
- 1...Qxe3
- 2.Re4#
- 1...Qe4
- 2.Rxe4#
- 2.c3#
- 1...Qf5
- 2.c3#
- 1...Be5
- 2.Bxe5#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(c);N_GUARD,XP(C)::R1(H)
- Q(c);N_GUARD,XP(F)::R1(H)
- Q(c);N_GUARD::R1(H),XQ(c)
- Q(c);N_GUARD::P(B)
- Q(c);N_GUARD::R1(H)
- Q(c);SBLOCK,XS(D)::R(H)
- B(h);N_GUARD::QAB(K),XB(h)
- P(d);::R(H)
- Tries
- Try
- B(L);
- Threat
- B(L)+P(G)
- Vars
- Q(c);N_GUARD,XP(F)::R1(H)
- Q(c);SBLOCK,XS(D)::R(H)
- Q(c);N_GUARD::P(B)
- Q(c);N_GUARD::R1(H)
- Refutation
- B(h);
- Try
- R(E);XP(d)
- Threat
- R(H)
- Vars
- Q(c);N_GUARD,XP(F)::R1(H)
- Q(c);N_GUARD::P(B)
- B(h);N_GUARD::B(L),XB(h)
- Refutation
- S(b);
- Try
- R(H);
- Threat
- QAR1(K)
- Vars
- Q(c);N_GUARD::R1(H),XQ(c)
- Refutation
- B(h);XR(H)
- Try
- R(H);
- Threat
- QAR1(K)
- Vars
- Q(c);N_GUARD::R1(H),XQ(c)
- Q(c);N_GUARD::P(B)
- Refutation
- B(h);
- Try
- R(H);
- Threat
- QAR1(K)
- Vars
- Q(c);N_GUARD::R1(H),XQ(c)
- Q(c);N_GUARD::P(B)
- Refutation
- B(h);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,P_PINR(H),XP(F)::QAR1(K)
- Q(c);XS(D)::QAR1(K)
- Q(c);N_GUARD::P(B)
- B(h);N_GUARD::B(L),XB(h)
- Refutation
- S(b);XQ(K)
- Try
- Q(K);CHECK
- Refutation
- P(f);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(c);XP(B)::QAR1(K)
- Q(c);N_GUARD,P_PINR(H),XP(F)::QAR1(K)
- Q(c);N_GUARD,XQ(K)::P(B)
- Q(c);XS(D)::QAR1(K)
- B(a);XP(B)::QAR1(K)
- Refutation
- P(g);XQ(K)
- Try
- Actual
- Q(K);
- Threat
- R(H)
- Vars
- Q(c);P_PINR(H),SBLOCK,XP(F)::QAB(K)+S(D),DCHECK
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::R1(H)
- Q(c);N_GUARD::P(B)
- B(h);N_GUARD::B(L),XB(h)
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).