MESON Chess Problem Database
Problem Display
PID: 218456 (2bNQ3/2p2N2/2p2R2/2rkp3/2p2p2/2P2n2/2B2K2/8 w - - 0 1)
Robertson, George T
Philadelphia Times, 1881
#2
7 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Qxc6#
- 1...Rb5
- 2.Qxc6#
- 1...Ba6
- 2.Qd7#
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Bb7
- 2.Qd7#
- 2.Qe6#
- 1...Bd7
- 2.Qxd7#
- 1...Se1
- 2.Qxe5#
- 1...Sg1
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Sd4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Sg5
- 2.Qxe5#
- 1...e4
- 2.Bxe4#
- 2.Qxe4#
- 1...Ra5
- Tries
- 1.Kxf3?
- threat
- 2.Be4#
- 2.Qxe5#
- 1...e4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Ra5
- 2.Qxc6#
- 2.Qxe5#
- 1...Rb5
- 2.Qxc6#
- 2.Qxe5#
- 1...Bf5
- 2.Qxe5#
- 1...Be6
- 2.Be4#
- 2.Qxe6#
- 1...Bg4+!
- threat
- 1.Bf5?
- 1...Ra5
- 2.Qxc6#
- 1...Rb5
- 2.Qxc6#
- 1...Ba6
- 2.Qd7#
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Bb7
- 2.Qd7#
- 2.Qe6#
- 1...Bd7
- 2.Qxd7#
- 1...Se1
- 2.Qxe5#
- 1...Sg1
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Sd4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Sg5
- 2.Qxe5#
- 1...e4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxf5!
- 1...Ra5
- 1.Rxf4?
- threat
- 2.Be4#
- 1...Ra5
- 2.Qxc6#
- 1...Rb5
- 2.Qxc6#
- 1...Sd2
- 2.Qxe5#
- 1...Sg5
- 2.Qxe5#
- 1...e4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bf5!
- threat
- 1.Rf5?
- 1...Ra5
- 2.Qxc6#
- 1...Rb5
- 2.Qxc6#
- 1...Ba6
- 2.Qd7#
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Bb7
- 2.Qd7#
- 2.Qe6#
- 1...Bd7
- 2.Qxd7#
- 1...Se1
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg1
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg5
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxf5!
- 1...Ra5
- 1.Kxf3?
- Keys
- 1.Re6!
- 1...Bxe6
- 2.Qxe6#
- 1...Ra5
- 2.Qxc6#
- 1...Rb5
- 2.Qxc6#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Se1
- 2.Rxe5#
- 1...Sg1
- 2.Rxe5#
- 1...Sd2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sd4
- 2.Rxe5#
- 1...Sh4
- 2.Rxe5#
- 1...Sg5
- 2.Rxe5#
- 1...e4
- 2.Bxe4#
- 1...Bxe6
- 1.Re6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD::QAB1(G),XP(g)
- B(i);N_GUARD::QAB1(G),XB(i)
- B(i);N_GUARD::QAR2(G),XB(i)
- S(a);N_GUARD::QAR1(G),XP(f)
- Tries
- Try
- K(B);P-FLIGHT,XS(a)
- Threat
- DUALS(2)
- Vars
- B(i);::QAR1(G),XP(f)
- Refutation
- B(i);CHECK
- Try
- B(A);
- Vars
- R(d);N_GUARD::QAB1(G),XP(g)
- B(i);N_GUARD::QAB1(G),XB(i)
- B(i);N_GUARD::QAR2(G),XB(i)
- S(a);N_GUARD::QAR1(G),XP(f)
- Refutation
- B(i);XB(A)
- Try
- R(D);XP(c)
- Threat
- B(A)
- Vars
- R(d);N_GUARD::QAB1(G),XP(g)
- S(a);N_GUARD::QAR1(G),XP(f)
- Refutation
- B(i);
- Try
- R(D);P_PINP(f)
- Vars
- R(d);N_GUARD::QAB1(G),XP(g)
- B(i);N_GUARD::QAB1(G),XB(i)
- B(i);N_GUARD::QAR2(G),XB(i)
- Refutation
- B(i);N_SPINP(f),XR(D)
- Try
- Actual
- R(D);
- Vars
- B(i);OGATE,XR(D)::QAB1(G),XB(i)
- R(d);N_GUARD::QAB1(G),XP(g)
- B(i);N_GUARD::QAR2(G)
- B(i);N_GUARD::QAR2(G),XB(i)
- S(a);N_GUARD::R1(D),XP(f)
- P(f);::B(A),XP(f)
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).