MESON Chess Problem Database
Problem Display
PID: 173148 (2B2bq1/8/6nR/1P1kB3/N3R3/4p3/4P1Q1/6K1 w - - 0 1)
Shire, David J
Problem Observer, 1998
#2
9 + 5
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bc5
- 2.Sc3#
- 1...Sf4
- 2.Bb7#
- 1...Sh4
- 2.Bb7#
- 1...Se7
- 2.Rd6#
- 1...Sh8
- 2.Bb7#
- 1...Bc5
- Tries
- 1.Bf4?
- threat
- 2.Bb7#
- 2.Rb4#
- 1...Sxf4
- 2.Bb7#
- 1...Qf7
- 2.Rb4#
- 1...Qe6
- 2.Bxe6#
- 1...Qh7
- 2.Be6#
- 2.Rb4#
- 1...Qg7
- 2.Be6#
- 2.Rb4#
- 1...Bb4
- 2.Bb7#
- 2.Rxb4#
- 1...Sh4
- 2.Bb7#
- 1...Se7
- 2.Rd6#
- 1...Sh8
- 2.Bb7#
- 1...Se5!
- threat
- 1.Bc7?
- threat
- 2.Bb7#
- 2.Rb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Qe6
- 2.Bxe6#
- 1...Qf7
- 2.Bb7#
- 2.Rf4#
- 1...Bb4
- 2.Bb7#
- 2.Rxb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Bd6
- 2.Bb7#
- 1...Sf4
- 2.Bb7#
- 1...Sh4
- 2.Bb7#
- 1...Se7
- 2.Rg4#
- 2.Rd6#
- 1...Sh8
- 2.Bb7#
- 2.Rg4#
- 1...Se5!
- threat
- 1.Bb8?
- threat
- 2.Bb7#
- 2.Rb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Qe6
- 2.Bxe6#
- 1...Qf7
- 2.Rf4#
- 1...Qh7
- 2.Be6#
- 2.Rb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Qg7
- 2.Be6#
- 2.Rb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Bb4
- 2.Bb7#
- 2.Rxb4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Bd6
- 2.Bb7#
- 1...Sf4
- 2.Bb7#
- 1...Sh4
- 2.Bb7#
- 1...Se7
- 2.Rg4#
- 2.Rd6#
- 1...Sh8
- 2.Bb7#
- 2.Rg4#
- 1...Se5!
- threat
- 1.Rh5?
- threat
- 2.Rb4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Qf7
- 2.Rd4#
- 2.Rf4#
- 1...Bb4
- 2.Rxb4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Reh4#
- 1...Sf4
- 2.Rd4#
- 1...Sh4
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 2.Rg4#
- 1...Sh8
- 2.Rd4#
- 2.Rg4#
- 1...Sxe5!
- threat
- 1.Qg3?
- threat
- 2.Rd4#
- 1...Kxe4
- 2.Sc3#
- 1...Bc5
- 2.Sc3#
- 1...Sf4
- 2.Bb7#
- 1...Sxe5!
- threat
- 1.Qg4?
- threat
- 2.Bb7#
- 1...Sxe5
- 2.Rd4#
- 1...Qe6
- 2.Bxe6#
- 1...Qh7
- 2.Be6#
- 1...Qg7
- 2.Be6#
- 1...Se7
- 2.Rd6#
- 1...Qf7!
- threat
- 1.Qxg6?
- threat
- 2.Bb7#
- 1...Qe6
- 2.Bxe6#
- 1...Qf7
- 2.Qc6#
- 1...Qh7
- 2.Be6#
- 2.Qc6#
- 1...Qg7
- 2.Be6#
- 1...Qxg6+!
- threat
- 1.Bf4?
- Keys
- 1.Qg5!
- threat
- 2.Rd4#
- 1...Kxe4
- 2.Sc3#
- 1...Sxe5
- 2.Bb7#
- 1...Bc5
- 2.Sc3#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- B(d);SBLOCK::S(D)
- S(c);P_PINQ(C)::B(I)
- S(c);OGATE,P_PINQ(C)::R1(H)
- Tries
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- S(c);P_PINQ(C),XB(G)::B(I)
- Q(e);::QAB(C)+R(E)
- Q(e);N_GUARD::B(I),XQ(e)
- S(c);P_PINQ(C)::B(I)
- S(c);OGATE,P_PINQ(C)::R1(H)
- Refutation
- S(c);P_PINQ(C)
- Try
- B(G);
- Threat
- DUALS(5)
- Vars
- Q(e);N_GUARD::B(I),XQ(e)
- B(d);::B(I)
- S(c);P_PINQ(C)::B(I)
- Refutation
- S(c);P_PINQ(C)
- Try
- B(G);
- Threat
- DUALS(5)
- Vars
- Q(e);N_GUARD::B(I),XQ(e)
- Q(e);::QAB(C)+R(E)
- B(d);::B(I)
- S(c);P_PINQ(C)::B(I)
- Refutation
- S(c);P_PINQ(C)
- Try
- R(H);
- Threat
- DUALS(5)
- Vars
- S(c);P_PINQ(C)::QAB(C)+R(E),DCHECK
- Refutation
- S(c);P_PINQ(C),P_SPINS(c),XB(G)
- Try
- Q(C);
- Threat
- R1(E)
- Vars
- K(b);S_FLIGHT,XR(E)::S(D)
- B(d);SBLOCK::S(D)
- S(c);P_PINQ(C)::B(I)
- Refutation
- S(c);P_PINQ(C),XB(G)
- Try
- Q(C);
- Threat
- B(I)
- Vars
- S(c);P_PINQ(C),SBLOCK,XB(G)::R1(E)
- Q(e);N_GUARD::B(I),XQ(e)
- Q(e);N_GUARD::B(I)
- S(c);OGATE,P_PINQ(C)::R1(H)
- Refutation
- Q(e);
- Try
- Q(C);P_SPINQ(C),XS(c)
- Threat
- B(I)
- Vars
- Q(e);N_GUARD,N_PINQ(C)::B(I),XQ(e)
- Q(e);N_PINQ(C)::QAB1(C)
- Q(e);N_GUARD::B(I)
- Refutation
- Q(e);CHECK,XQ(C)
- Try
- Actual
- Q(C);
- Threat
- R1(E)
- Vars
- K(b);S_FLIGHT,XR(E)::S(D)
- S(c);P_PINQ(C),P_SPINS(c),XB(G)::B(I)
- B(d);SBLOCK::S(D)
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).