MESON Chess Problem Database
Problem Display
PID: 175489 (5n2/2p2K2/Q3p3/3k1b1R/N5N1/4P3/2Bn4/8 w - - 0 1)
McAllister, George W
Philadelphia Times, 1899
#2
7 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Se4
- 2.Bb3#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...e5
- 2.Sf6#
- 1...c5
- 2.Sc3#
- 1...c6
- 2.Qd3#
- 1...Se4
- Tries
- 1.Rxf5+?
- 1...e5
- 2.Sf6#
- 2.Rxe5#
- 1...exf5!
- 1...e5
- 1.Qb5+?
- 1...c5
- 2.Qxc5#
- 1...Kd6!
- 1...c5
- 1.e4+?
- 1...Kd4
- 2.Qd3#
- 1...Sxe4!
- 1...Kd4
- 1.Rxf5+?
- Keys
- 1.Bd1!
- 1...Ke4
- 2.Sc3#
- 1...c6
- 2.Qd3#
- 1...Sb1
- 2.Bf3#
- 1...Sf1
- 2.Bf3#
- 1...Sb3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sc4
- 2.Bf3#
- 1...Se4
- 2.Bb3#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...e5
- 2.Sf6#
- 1...c5
- 2.Sc3#
- 1...Ke4
- 1.Bd1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,SBLOCK::B(A)
- S(f);N_GUARD::QAB1(F),XP(d)
- P(d);N_SPINB(c),SBLOCK::S(D)
- P(e);SBLOCK::S(C)
- P(e);SBLOCK::QAR2(F)
- Tries
- Try
- R(E);CHECK,XB(c)
- Refutation
- P(d);XR(E)
- Try
- Q(F);CHECK
- Vars
- P(e);P_SPINP(e)::QAR1(F),XP(e)
- Refutation
- K(b);N_SPINB(c),P-FLIGHT
- Try
- P(B);CHECK
- Vars
- K(b);N_SPINB(c),P-FLIGHT::QAR1(F)
- Refutation
- S(a);XP(B)
- Try
- Actual
- B(A);
- Vars
- K(b);N_SPINB(c),S_FLIGHT::S(C)
- P(e);SBLOCK::QAR2(F)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(a);N_GUARD,SBLOCK::B(A)
- S(f);N_GUARD::QAB1(F),XP(d)
- P(d);N_SPINB(c),SBLOCK::S(D)
- P(e);SBLOCK::S(C)
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).