MESON Chess Problem Database
Problem Display
PID: 261007 (1N6/4p1r1/7p/N2kP1n1/1Pq3QK/1B3p2/8/B1r1Rb2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Neue Zurcher Zeitung, 1972
#2
9 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxb3
- 2.Qd7#
- 1...Se6
- 2.Qe4#
- 1...e6
- 2.Qd4#
- 1...Qxb3
- Tries
- 1.Sxc4?
- threat
- 2.Se3#
- 2.Sb6#
- 2.Qd7#
- 1...Rxa1
- 2.Sb6#
- 2.Qd7#
- 1...Rxe1
- 2.Se3#
- 2.Sb6#
- 1...Bxc4
- 2.Qd7#
- 1...Rc3
- 2.Sb6#
- 2.Qd7#
- 1...Rg6
- 2.Se3#
- 2.Sb6#
- 1...Be2
- 2.Se3#
- 2.Sb6#
- 1...Bh3
- 2.Se3#
- 2.Sb6#
- 1...Se4
- 2.Se3#
- 2.Sb6#
- 1...Se6
- 2.Se3#
- 2.Sb6#
- 2.Qxf3#
- 2.Qe4#
- 1...Sf7
- 2.Se3#
- 2.Sb6#
- 1...e6
- 2.Se3#
- 2.Sb6#
- 2.Qd4#
- 1...Rxc4!
- threat
- 1.Bxc4+?
- 1...Bxc4
- 2.Qd7#
- 1...Rxc4!
- 1...Bxc4
- 1.Rd1+?
- 1...Bd3
- 2.Rxd3#
- 1...Rxd1!
- 1...Bd3
- 1.Sxc4?
- Keys
- 1.Sa6!
- threat
- 2.Sc7#
- 1...Qxb3
- 2.Qd7#
- 1...Se6
- 2.Qe4#
- 1...e6
- 2.Qd4#
- threat
- 1.Sa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(d);N_PINQ(E),N_SPINQ(d),XB(C)::QAR2(E)
- S(f);N_GUARD,SBLOCK::QAB1(E)
- P(h);SBLOCK::QAR1(E)
- Tries
- Try
- S(G);N_SPINQ(E),XQ(d)
- Threat
- DUALS(3)
- Vars
- B(b);P_SPINB(b),XS(G)::QAR2(E)
- Refutation
- R(a);P_PINQ(E),P_SPINR(a),XS(G)
- Try
- B(C);CHECK,N_SPINQ(E),XQ(d)
- Vars
- B(b);XB(C)::QAR2(E)
- Refutation
- R(a);P_PINQ(E),XB(C)
- Try
- R(B);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::R(B),XB(b)
- Refutation
- R(a);XR(B)
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- Q(d);N_PINQ(E),N_SPINQ(d),XB(C)::QAR2(E)
- S(f);N_GUARD,SBLOCK::QAB1(E)
- P(h);SBLOCK::QAR1(E)
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).