MESON Chess Problem Database
Problem Display
PID: 223028 (1B6/p7/B2n2N1/8/1Knkr2R/4pQ2/8/8 w - - 0 1)
Jacobs, Herbert
1st Prize, BCA Ty., 1886
#2
6 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd3
- 2.Qd1#
- 1...Sa3
- 2.Qd1#
- 1...Sa5
- 2.Qd1#
- 1...Sb6
- 2.Qd1#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3
- Tries
- 1.Bxc4?
- threat
- 2.Bxa7#
- 2.Qd1#
- 2.Qf6#
- 1...Rxh4
- 2.Bxa7#
- 2.Qd5#
- 1...Sxc4
- 2.Qxe4#
- 1...Rf4
- 2.Bxa7#
- 2.Qd5#
- 1...Rg4
- 2.Bxa7#
- 2.Qd5#
- 1...Sb5
- 2.Be5#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 2.Qf6#
- 1...Sf5
- 2.Be5#
- 2.Bxa7#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 1...Sb7
- 2.Be5#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 2.Qf6#
- 1...Sf7
- 2.Bxa7#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 1...Sc8
- 2.Be5#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 2.Qf6#
- 1...Se8
- 2.Be5#
- 2.Bxa7#
- 2.Rxe4#
- 2.Qd1#
- 2.Qxe4#
- 1...e2
- 2.Bxa7#
- 2.Qf2#
- 2.Qc3#
- 2.Qd3#
- 1...a6
- 2.Ba7#
- 2.Qd1#
- 2.Qf6#
- 1...a5+!
- threat
- 1.Bxa7+?
- 1...Kd3
- 2.Qd1#
- 1...Sb6
- 2.Qd1#
- 1...Kd5!
- 1...Kd3
- 1.Bxc4?
- Keys
- 1.Se7!
- 1...Kd3
- 2.Qd1#
- 1...Ke5
- 2.Rxe4#
- 1...Rxh4
- 2.Qd5#
- 1...Rf4
- 2.Qd5#
- 1...Rg4
- 2.Qd5#
- 1...Sb2
- 2.Qf6#
- 1...Sd2
- 2.Qf6#
- 1...Sa3
- 2.Qf6#
- 1...Sa5
- 2.Qf6#
- 1...Se5
- 2.Bxa7#
- 1...Sb6
- 2.Qf6#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...e2
- 2.Qc3#
- 1...Kd3
- 1.Se7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- K(c);N_SPINR(d),P-FLIGHT,P_SPINP(a),P_SPINS(b)::QAR2(A)
- S(b);N_GUARD::QAR(A)
- S(e);N_GUARD::QAR1(A),XR(d)
- Tries
- Try
- B(D);XS(b)
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD,XB(D)::QAR1(A),XR(d)
- Refutation
- P(f);CHECK
- Try
- B(F);CHECK,XP(f)
- Vars
- K(c);N_SPINR(d),P-FLIGHT,P_SPINP(a),P_SPINS(b)::QAR2(A)
- S(b);P_SPINS(b)::QAR(A)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- S(E);
- Vars
- K(c);N_SPINR(d),P-FLIGHT,P_SPINP(a),P_SPINS(b)::QAR2(A)
- K(c);N_SPINR(d),P_SPINS(e),S_FLIGHT::R1(C),XR(d)
- R(d);N_SPINR(d),OGATE,XR(C)::QAR1(A)
- R(d);OGATE::QAR1(A)
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD,SBLOCK::B(F),XP(f)
- S(e);N_GUARD::QAR1(A),XR(d)
- 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).