MESON Chess Problem Database
Problem Display
PID: 276857 (B7/2R3K1/6N1/1p6/b2k3N/2R4q/2PP2P1/6r1 w - - 0 1)
Hirschenson, Aaron
3rd Comm., Pat a Mat, 2007
#2
9 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Sf5#
- 2.Rd3#
- 1...Qg4
- 2.Rd3#
- 1...Qf5
- 2.Sxf5#
- 1...Qe6
- 2.Sf3#
- 2.Rd3#
- 1...Qd7+
- 2.Rxd7#
- 1...Qc8
- 2.Sf3#
- 2.Rd3#
- 1...Qh1
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 2.Rd7#
- 1...Qh2
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 1...Qxc3
- 2.Sf5#
- 1...Qd3
- 2.Rxd3#
- 2.Rd7#
- 1...Qe3
- 2.Sf5#
- 2.Rd7#
- 2.dxe3#
- 1...Qf3
- 2.Sxf3#
- 1...Qg3
- 2.Sf5#
- 1...Qxh4
- 2.Rd3#
- 2.Rd7#
- 1...b4
- 2.R3c4#
- 2.R7c4#
- 1...Qxg2
- Tries
- 1.Rxh3?
- threat
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 2.c3#
- 1...Rc1
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 1...Rf1
- 2.Rd3#
- 2.c3#
- 1...b4
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 1...Bxc2!
- threat
- 1.gxh3?
- threat
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 2.Rd7#
- 1...Bxc2
- 2.Sf3#
- 2.Rd7#
- 1...Rf1
- 2.Rd3#
- 2.Rd7#
- 1...Rg3
- 2.Sf5#
- 2.Rd7#
- 1...Rg5
- 2.Sf3#
- 2.Rd3#
- 1...Bb3
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 1...b4
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 2.R3c4#
- 2.R7c4#
- 1...Rxg6+!
- threat
- 1.g3?
- threat
- 2.Sf3#
- 2.Rd3#
- 1...Qd7+
- 2.Rxd7#
- 1...Qxg3
- 2.Sf5#
- 1...Qxh4
- 2.Rd3#
- 2.Rd7#
- 1...Bxc2
- 2.Sf3#
- 1...Qf1
- 2.Rd7#
- 1...Qg2
- 2.Sf5#
- 2.Rd3#
- 1...Qg4
- 2.Rd3#
- 1...Qf5
- 2.Sxf5#
- 1...Qh1
- 2.Sf5#
- 2.Rd3#
- 1...Rf1
- 2.Rd3#
- 1...Rxg3!
- threat
- 1.Rxh3?
- Keys
- 1.g4!
- threat
- 2.Sf5#
- 2.Rd7#
- 1...Qxg4
- 2.Rd3#
- 1...Qxc3
- 2.Sf5#
- 1...Qxh4
- 2.Rd3#
- 2.Rd7#
- 1...Bxc2
- 2.Rd7#
- 1...Qf1
- 2.Rd7#
- 1...Qg2
- 2.Sf5#
- 2.Rd3#
- 1...Qh1
- 2.Sf5#
- 2.Rd3#
- 1...Qh2
- 2.Sf3#
- 2.Sf5#
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 2.Rd7#
- 1...Qf3
- 2.Sxf3#
- 1...Qg3
- 2.Sf5#
- 1...Rf1
- 2.Rd7#
- 1...Bb3
- 2.Sf5#
- 1...b4
- 2.Sf5#
- 2.R3c4#
- 2.R7c4#
- threat
- 1.g4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(b);N_GUARD,P_PINS(F)::R1(D)
- Q(b);N_GUARD::S(E),XQ(b)
- Q(b);CHECK,N_GUARD::R(G),XQ(b)
- Q(b);N_GUARD,XR(D)::S(E)
- Q(b);N_GUARD,P_PINS(F)::S(E)
- Tries
- Try
- R(D);XQ(b)
- Threat
- DUALS(4)
- Refutation
- B(c);XP(A)
- Try
- P(C);P_SPINS(F),XQ(b)
- Threat
- DUALS(4)
- Refutation
- R(a);CHECK,XS(F)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::R(G),XQ(b)
- Q(b);N_GUARD,P_PINS(F),XP(C)::S(E)
- B(c);XP(A)::S(E)
- Q(b);N_GUARD::R(G)
- Q(b);P_PINS(F)::R1(D)
- Q(b);N_GUARD::S(E),XQ(b)
- R(a);::R1(D)
- Refutation
- R(a);P_PINS(F),XP(C)
- Try
- Actual
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,P_PINS(F),XP(C)::R1(D)
- Q(b);XR(D)::S(E)
- B(c);XP(A)::R(G)
- Q(b);::R(G)
- Q(b);N_GUARD::S(E),XQ(b)
- Q(b);::S(E)
- R(a);::R(G)
- B(c);::S(E)
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).