MESON Chess Problem Database
Problem Display
PID: 223110 (2Br4/1p4pq/bPQ5/b5Pn/6R1/Np1k2rn/1P2R1P1/3K3N w - - 0 1)
Robertson, George T
Philadelphia Times, 1885
#2
11 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qxe4#
- 1...Qf5
- 2.Bxf5#
- 1...Qg6
- 2.Qxg6#
- 1...Qg8
- 2.Bf5#
- 2.Qe4#
- 2.Qg6#
- 1...Qh6
- 2.Bf5#
- 2.Qe4#
- 1...Qh8
- 2.Bf5#
- 2.Qe4#
- 2.Qg6#
- 1...Rxg2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Rxc8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Re8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rf8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rg8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rh8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Bc3
- 2.Qxc3#
- 1...Bxb6
- 2.Qc3#
- 1...Bc4
- 2.Qxc4#
- 1...Bb5
- 2.Qxb5#
- 1...Sg1
- 2.Sf2#
- 1...Sf2+
- 2.Sxf2#
- 1...Sxg5
- 2.Sf2#
- 1...bxc6
- 2.Bxa6#
- 1...g6
- 2.Qe4#
- 1...Qe4
- Tries
- 1.Rb4?
- threat
- 2.Qc3#
- 1...Sf2+
- 2.Sxf2#
- 1...Rxc8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...bxc6
- 2.Bxa6#
- 1...Bc4
- 2.Qxc4#
- 1...Bxb4!
- threat
- 1.Rb4?
- Keys
- 1.Sc2!
- 1...Sf2+
- 2.Sxf2#
- 1...bxc2+
- 2.Qxc2#
- 1...Rxg2
- 2.Re3#
- 2.Qf3#
- 1...Rxg4
- 2.Re3#
- 1...Rxc8
- 2.Rd4#
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Bxb6
- 2.Se1#
- 2.Sb4#
- 2.Rd2#
- 2.Qc3#
- 1...Sxg5
- 2.Sf2#
- 1...bxc6
- 2.Bxa6#
- 1...Qe4
- 2.Qxe4#
- 1...Qf5
- 2.Bxf5#
- 1...Qg6
- 2.Qxg6#
- 1...Qg8
- 2.Bf5#
- 2.Qe4#
- 2.Qg6#
- 1...Qh6
- 2.Bf5#
- 2.Qe4#
- 1...Qh8
- 2.Bf5#
- 2.Qe4#
- 2.Qg6#
- 1...Re3
- 2.Rxe3#
- 1...Rf3
- 2.Qxf3#
- 1...Rd4
- 2.Rxd4#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Rd4#
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd4#
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd4#
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rh8
- 2.Rd4#
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Be1
- 2.Sxe1#
- 1...Bd2
- 2.Rxd2#
- 1...Bc3
- 2.Qxc3#
- 1...Bb4
- 2.Sxb4#
- 1...Bc4
- 2.Qxc4#
- 1...Bb5
- 2.Qxb5#
- 1...Sg1
- 2.Sf2#
- 1...S3f4
- 2.Sf2#
- 1...S5f4
- 2.Rxg3#
- 1...Sf6
- 2.Rxg3#
- 1...g6
- 2.Qe4#
- 1...Sf2+
- 1.Sc2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 2
- Sets
- Q(j);N_GUARD::QAB1(J),XQ(j)
- Q(j);N_GUARD::B(K),XQ(j)
- Q(j);N_GUARD::QAB(J),XQ(j)
- R(c);N_GUARD,XP(E)::QAR2(J)
- R(c);N_GUARD::QAR2(J),XR(c)
- R(k);N_GUARD::QAR2(J),XR(k)
- R(k);N_GUARD::QAR(J),XR(k)
- B(e);N_GUARD::QAR1(J),XB(e)
- B(e);N_GUARD,XP(I)::QAR1(J)
- B(g);N_GUARD::QAB1(J),XB(g)
- B(g);N_GUARD::QAB(J),XB(g)
- S(d);N_GUARD::S(B)
- S(d);CHECK,N_GUARD::S(B),XS(d)
- S(d);N_GUARD,XP(H)::S(B)
- P(h);OGATE,XQ(J)::B(K),XB(g)
- P(i);S_CUTQ(j)::QAB1(J)
- Tries
- Try
- R(G);
- Threat
- QAR1(J)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- P(h);OGATE,XQ(J)::B(K),XB(g)
- B(g);N_GUARD::QAB1(J),XB(g)
- Refutation
- B(e);XR(G)
- Try
- Actual
- S(F);
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- P(a);CHECK,OGATE,XS(F)::QAB1(J),XP(a)
- R(c);N_GUARD,XR(G)::R1(D)
- S(d);N_GUARD,XP(H)::S(B)
- P(h);OGATE,XQ(J)::B(K),XB(g)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- Q(j);N_GUARD::B(K),XQ(j)
- Q(j);N_GUARD::QAB(J),XQ(j)
- R(c);N_GUARD::R1(D),XR(c)
- R(c);N_GUARD::QAR2(J),XR(c)
- R(k);N_GUARD::R1(G),XR(k)
- R(k);N_GUARD::QAR2(J),XR(k)
- R(k);N_GUARD::QAR(J),XR(k)
- B(e);N_GUARD::S(F),XB(e)
- B(e);N_GUARD::R1(D),XB(e)
- B(e);N_GUARD::QAR1(J),XB(e)
- B(g);N_GUARD::QAB1(J),XB(g)
- B(g);N_GUARD::QAB(J),XB(g)
- S(d);N_GUARD::S(B)
- S(f);N_GUARD::R(G),XR(c)
- P(i);S_CUTQ(j)::QAB1(J)
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).