MESON Chess Problem Database
Problem Display
PID: 260978 (5R2/1Q6/2N1p3/1Kp1P1p1/2P1kq2/8/6RB/3N1B2 w - - 0 1)
Ascher, Valeska
Neue Zurcher Zeitung, 1944
#2
10 + 5
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kf3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...Qc1
- 2.Qh7#
- 1...Qd2
- 2.Qh7#
- 1...Qe3
- 2.Qh7#
- 1...Qg3
- 2.Qh7#
- 1...Qg4
- 2.Rxg4#
- 1...g4
- 2.Rxf4#
- 1...Kf3
- Tries
- 1.Bd3+?
- 1...Kf3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Rg3#
- 1...Kxd3!
- 1...Kf3
- 1.Rd2?
- 1...Qxd2
- 2.Qh7#
- 1...Qxh2
- 2.Bd3#
- 1...Qxe5
- 2.Sxe5#
- 2.Bg2#
- 2.Bd3#
- 1...Qxf1
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...Qxf8
- 2.Sd4#
- 2.Se7#
- 1...Qf6
- 2.Sd4#
- 2.Se7#
- 1...Qf7
- 2.Se7#
- 1...Qe3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Qh7#
- 1...Qg3
- 2.Qh7#
- 1...Qf2
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Bd3#
- 1...Qf3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...Qg4
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Bd3#
- 1...Qh4
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Bg2#
- 2.Bd3#
- 1...Qf5
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...g4
- 2.Rxf4#
- 1...Kf3!
- 1...Qxd2
- 1.Qh7+?
- 1...Kf3
- 2.Rg3#
- 2.Qd3#
- 1...Qf5!
- 1...Kf3
- 1.Bd3+?
- Keys
- 1.Kxc5!
- 1...Qe3+
- 2.Sd4#
- 1...Qxe5+
- 2.Sxe5#
- 1...Qf2+
- 2.Sd4#
- 1...Qxf8+
- 2.Se7#
- 1...Kf3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...Qxh2
- 2.Qb1#
- 1...Qxf1
- 2.Sb4#
- 1...Qf6
- 2.Sd4#
- 2.Se7#
- 1...Qf7
- 2.Se7#
- 1...Qc1
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Qh7#
- 1...Qd2
- 2.Sd4#
- 2.Qh7#
- 1...Qg3
- 2.Qh7#
- 1...Qf3
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...Qg4
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Rxg4#
- 2.Qb1#
- 1...Qh4
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Qb1#
- 1...Qf5
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 1...g4
- 2.Rxf4#
- 1...Qe3+
- 1.Kxc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(b);N_GUARD::QAB(I)
- Q(b);OGATEB::R(C),XQ(b)
- P(d);N_GUARD::R1(J),XQ(b)
- Tries
- Try
- B(B);CHECK
- Refutation
- K(a);S_FLIGHT,XB(B)
- Try
- R(C);
- Vars
- Q(b);N_GUARD,XR(C)::QAB(I)
- Q(b);XB(D)::B(B)
- Q(b);::QAB(I)+S(H)
- Q(b);N_GUARD::QAB(I)
- P(d);N_GUARD::R1(J),XQ(b)
- Refutation
- K(a);P_SPINQ(b),S_FLIGHT
- Try
- Q(I);CHECK
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Actual
- K(F);P-FLIGHT,XP(c)
- Vars
- Q(b);CHECK::QAB(I)+S(H)
- Q(b);CHECK,XP(G)::QAB(I)+S(H),XQ(b)
- Q(b);CHECK,XR(J)::QAB(I)+S(H)
- Q(b);XB(D)::QAB(I)
- Q(b);XB(B)::QAB(I)+S(H)
- Q(b);::QAB(I)+S(H)
- Q(b);N_GUARD::QAB(I)
- P(d);N_GUARD::R1(J),XQ(b)
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).