MESON Chess Problem Database
Problem Display
PID: 222701 (1KN5/1Rp2P2/2kbr2R/3p4/1P6/3N3B/1Q6/8 w - - 0 1)
Flagg, John O
Nashville Daily American, 1884
#2
9 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Sa7#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Re2
- 2.Sa7#
- 2.Qc3#
- 2.b5#
- 1...Re3
- 2.Sa7#
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Re4
- 2.Sa7#
- 2.b5#
- 1...Re5
- 2.Sxe5#
- 2.Sa7#
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Rf6
- 2.Sa7#
- 2.b5#
- 1...Rg6
- 2.Sa7#
- 2.b5#
- 1...Rxh6
- 2.Sa7#
- 2.b5#
- 1...Re7
- 2.Sa7#
- 2.Sxe7#
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Re8
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 2.fxe8Q#
- 2.fxe8B#
- 1...Bc5
- 2.Se5#
- 1...Be5
- 2.Sxe5#
- 1...Be7
- 2.Se5#
- 1...Bf8
- 2.Se5#
- 1...Re1
- Tries
- 1.Se5+?
- 1...Rxe5
- 2.Sa7#
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 1...Bxe5!
- 1...Rxe5
- 1.Bxe6?
- threat
- 2.Sa7#
- 2.b5#
- 1...Bh2
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Bg3
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Bf4
- 2.Qc3#
- 2.Qc2#
- 2.b5#
- 1...Bc5
- 2.Se5#
- 2.b5#
- 1...Be5
- 2.Sxe5#
- 2.b5#
- 1...Be7
- 2.Se5#
- 2.b5#
- 1...Bf8
- 2.Se5#
- 2.b5#
- 1...Bxb4!
- threat
- 1.Rxe6?
- threat
- 2.Se5#
- 1...Kd7
- 2.Rxd6#
- 1...d4!
- threat
- 1.Qc1+?
- 1...Bc5
- 2.Se5#
- 1...Kd7!
- 1...Bc5
- 1.Qc3+?
- 1...Bc5
- 2.Se5#
- 1...Kd7!
- 1...Bc5
- 1.Qh8?
- 1...Kd7
- 2.Qe8#
- 1...Rxh6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Bxb4
- 2.Qe8#
- 1...Re1
- 2.Sa7#
- 2.Qc3#
- 2.b5#
- 1...Re2
- 2.Sa7#
- 2.Qc3#
- 2.b5#
- 1...Re3
- 2.Sa7#
- 2.Qc3#
- 2.b5#
- 1...Re4
- 2.Sa7#
- 2.b5#
- 1...Re5
- 2.Sxe5#
- 2.Sa7#
- 2.b5#
- 1...Rf6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Rg6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Re7
- 2.Sa7#
- 2.Sxe7#
- 2.Qc3#
- 2.b5#
- 1...Re8
- 2.Qc3#
- 2.Qxe8#
- 2.b5#
- 2.fxe8Q#
- 2.fxe8B#
- 1...Bh2
- 2.Qe8#
- 1...Bg3
- 2.Qe8#
- 1...Bf4
- 2.Qe8#
- 1...Bc5
- 2.Se5#
- 2.Qe8#
- 1...Be5
- 2.Sxe5#
- 2.Qe8#
- 1...Be7
- 2.Se5#
- 2.Qe8#
- 1...Bf8
- 2.Se5#
- 1...d4!
- 1...Kd7
- 1.Qc2+?
- 1...Bc5
- 2.Se5#
- 2.Qa4#
- 1...Kd7!
- 1...Bc5
- 1.Se5+?
- Keys
- 1.Qe5!
- 1...Kd7
- 2.Qxd6#
- 1...Rxe5
- 2.Sxe5#
- 2.Sa7#
- 2.b5#
- 1...Rxh6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Bxb4
- 2.Qxc7#
- 1...Bxe5
- 2.Sxe5#
- 1...Rf6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Rg6
- 2.Sa7#
- 2.Qe8#
- 2.b5#
- 1...Re7
- 2.Sa7#
- 2.Sxe7#
- 2.Qc3#
- 2.b5#
- 1...Re8
- 2.Qc3#
- 2.Qxe8#
- 2.b5#
- 2.fxe8Q#
- 2.fxe8B#
- 1...Bc5
- 2.Qxc7#
- 1...Be7
- 2.Qxc7#
- 1...Bf8
- 2.Qxc7#
- 1...d4
- 2.Qb5#
- 1...Kd7
- 1.Qe5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(c);N_GUARD,P_SPINR(d)::S(B)
- B(c);N_GUARD,P_SPINR(d)::S(B),XB(c)
- Tries
- Try
- S(B);CHECK
- Refutation
- B(c);P_SPINR(d),XS(B)
- Try
- B(C);XR(d)
- Threat
- DUALS(2)
- Refutation
- B(c);XP(D)
- Try
- R(E);P_PINB(c),XR(d)
- Threat
- S(B)
- Vars
- K(b);N_SPINB(c),P_SPINP(e),S_FLIGHT::B(C)+R(E),DCHECK,XB(c)
- Refutation
- P(a);
- Try
- Q(A);CHECK
- Vars
- B(c);P_SPINB(c),P_SPINR(d)::S(B)
- Refutation
- K(b);P_SPINP(e),P_SPINR(d),S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- B(c);P_SPINB(c),P_SPINR(d)::S(B)
- Refutation
- K(b);P_SPINP(e),P_SPINR(d),S_FLIGHT
- Try
- Q(A);
- Vars
- K(b);P_SPINP(e),P_SPINR(d),S_FLIGHT::QAB1(A)
- B(c);P_SPINR(d),XP(D)::QAB(A)
- B(c);P_SPINR(d)::QAB(A)
- B(c);N_GUARD,P_SPINR(d)::S(B)
- Refutation
- P(a);
- Try
- Q(A);CHECK
- Refutation
- K(b);P_SPINP(e),P_SPINR(d),S_FLIGHT
- Try
- Actual
- Q(A);
- Vars
- K(b);P_SPINP(e),P_SPINR(d),S_FLIGHT::QAR1(A),XB(c)
- B(c);OGATE,P_SPINR(d),XP(D)::QAR1(A),XP(e)
- B(c);P_SPINR(d),XQ(A)::S(B),XB(c)
- B(c);OGATE,P_SPINR(d)::QAR1(A),XP(e)
- P(a);OGATE::QAB1(A)
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).