MESON Chess Problem Database
Problem Display
PID: 206385 (3K3N/2p4p/p2kr2R/N1n1n3/2BB4/8/8/1Q3b2 w - - 0 1)
Hertzendorf, A
Revista de Sah, 1925
#2
7 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Rxe6#
- 1...Scd3
- 2.Rxe6#
- 1...Sa4
- 2.Rxe6#
- 1...Se4
- 2.Rxe6#
- 1...Scd7
- 2.Rxe6#
- 1...Sed3
- 2.Sf7#
- 1...Sf3
- 2.Sf7#
- 1...Sg4
- 2.Sf7#
- 1...Sg6
- 2.Sf7#
- 1...Sed7
- 2.Sf7#
- 1...Sf7+
- 2.Sxf7#
- 1...c6
- 2.Qb8#
- 1...Sb3
- Tries
- 1.Qb4?
- threat
- 2.Bxc5#
- 2.Rxe6#
- 2.Qxc5#
- 1...Sf7+
- 2.Sxf7#
- 1...Rxh6
- 2.Bxc5#
- 2.Qxc5#
- 1...Bxc4
- 2.Qxc5#
- 1...Sxc4
- 2.Qxc5#
- 1...Rf6
- 2.Bxc5#
- 2.Rxf6#
- 2.Qxc5#
- 1...Rg6
- 2.Bxc5#
- 2.Qxc5#
- 1...Bh3
- 2.Bxc5#
- 2.Qxc5#
- 1...Sd3
- 2.Sf7#
- 2.Rxe6#
- 1...Sf3
- 2.Sf7#
- 2.Rxe6#
- 2.Qxc5#
- 1...Sg4
- 2.Sf7#
- 2.Rxe6#
- 2.Qxc5#
- 1...Sg6
- 2.Sf7#
- 2.Qxc5#
- 1...Sd7
- 2.Sf7#
- 2.Rxe6#
- 1...Sc6+!
- threat
- 1.Qb5?
- threat
- 2.Bxc5#
- 2.Qxc5#
- 1...Sb7+
- 2.Sxb7#
- 1...Sc6+
- 2.Qxc6#
- 1...Sf7+
- 2.Sxf7#
- 1...Bxc4
- 2.Qxc5#
- 1...Sxc4
- 2.Qc6#
- 2.Qxc5#
- 1...Sb3
- 2.Sb7#
- 2.Bxe5#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe5#
- 1...Scd3
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 1...Sa4
- 2.Sb7#
- 2.Bxe5#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe5#
- 1...Se4
- 2.Sb7#
- 2.Bxe5#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe5#
- 1...Scd7
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 1...Sed3
- 2.Sf7#
- 2.Qc6#
- 1...Sf3
- 2.Sf7#
- 2.Qc6#
- 2.Qxc5#
- 1...Sg4
- 2.Sf7#
- 2.Qc6#
- 2.Qxc5#
- 1...Sg6
- 2.Sf7#
- 2.Qc6#
- 2.Qxc5#
- 1...Sed7
- 2.Sf7#
- 2.Qc6#
- 1...axb5!
- threat
- 1.Qb6+?
- 1...Sc6+
- 2.Qxc6#
- 1...c6
- 2.Bxc5#
- 2.Qxc5#
- 2.Qc7#
- 2.Qb8#
- 1...cxb6!
- 1...Sc6+
- 1.Qb4?
- Keys
- 1.Qe4!
- threat
- 2.Bxe5#
- 2.Qd5#
- 2.Qxe5#
- 1...Sb7+
- 2.Sxb7#
- 1...Sc6+
- 2.Qxc6#
- 1...Sf7+
- 2.Sxf7#
- 1...Bxc4
- 2.Bxe5#
- 2.Qxe5#
- 1...Sxe4
- 2.Rxe6#
- 1...Sxc4
- 2.Sf7#
- 2.Qc6#
- 1...Bg2
- 2.Bxe5#
- 2.Qxe5#
- 1...Sb3
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe5#
- 1...Scd3
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 1...Sa4
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe5#
- 1...Scd7
- 2.Sb7#
- 2.Rxe6#
- 2.Qd5#
- 1...Sed3
- 2.Sf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sf3
- 2.Sf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sg4
- 2.Sf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sg6
- 2.Sf7#
- 2.Qd5#
- 2.Qc6#
- 1...Sed7
- 2.Sf7#
- 2.Qd5#
- 2.Qc6#
- 1...c6
- 2.Bxe5#
- 2.Qxe5#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- S(b);N_GUARD::R1(E),XR(f)
- S(c);N_GUARD::S(G)
- S(c);N_GUARD,N_SPINR(f)::S(G)
- S(c);CHECK,N_GUARD::S(G),XS(c)
- P(g);OGATEB::QAB(A)
- Tries
- Try
- Q(A);P_PINS(b)
- Threat
- DUALS(3)
- Vars
- S(c);CHECK,N_GUARD::S(G),XS(c)
- B(a);XB(B)::QAB1(A),XS(b)
- S(c);XB(B)::QAB1(A),XS(b)
- Refutation
- S(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(D),XS(b)
- S(c);CHECK,N_GUARD::QAR1(A),XS(c)
- S(c);CHECK,N_GUARD::S(G),XS(c)
- B(a);XB(B)::QAB1(A),XS(b)
- Refutation
- P(d);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(A),XS(c)
- Refutation
- P(g);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(b);CHECK,N_GUARD::S(D),XS(b)
- S(c);CHECK,N_GUARD::QAR1(A),XS(c)
- S(c);CHECK,N_GUARD::S(G),XS(c)
- S(b);N_GUARD,XQ(A)::R1(E),XR(f)
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).