MESON Chess Problem Database
Problem Display
PID: 101435 (8/1R6/5Q2/kb1BR3/3P4/1P6/K7/8 w - - 0 1)
Wurzburg, Otto
Good Companions, 1921
#2
7 + 2
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Bc4#
- 2.Qb6#
- 1...Be2
- 2.Bc4#
- 2.Qb6#
- 1...Bd3
- 2.Bc4#
- 2.Qb6#
- 1...Ba4
- 2.Qb6#
- 2.b4#
- 1...Bc4
- 2.Bxc4#
- 2.Qb6#
- 1...Ba6
- 2.Qd8#
- 2.Qb6#
- 1...Bd7
- 2.Qb6#
- 1...Be8
- 2.Qb6#
- 1...Bf1
- Tries
- 1.Re8?
- 1...Bxe8
- 2.Qb6#
- 1...Bc6
- 2.Ra8#
- 1...Bf1
- 2.Qb6#
- 1...Be2
- 2.Qb6#
- 1...Bd3
- 2.Qb6#
- 1...Ba4
- 2.Ra8#
- 2.Qb6#
- 2.b4#
- 1...Bc4
- 2.Qb6#
- 1...Ba6
- 2.Qd8#
- 2.Qb6#
- 1...Bd7
- 2.Ra8#
- 2.Qb6#
- 1...Kb4!
- 1...Bxe8
- 1.Qd8+?
- 1...Ka6
- 2.Qb6#
- 2.Qa8#
- 1...Kb4!
- 1...Ka6
- 1.Qc6?
- threat
- 2.Rxb5#
- 2.Qxb5#
- 1...Kb4
- 2.Rxb5#
- 1...Bf1
- 2.Bc4#
- 2.Qa4#
- 2.Qb6#
- 2.b4#
- 1...Be2
- 2.Bc4#
- 2.Qa4#
- 2.Qb6#
- 2.b4#
- 1...Bd3
- 2.Bc4#
- 2.Qa4#
- 2.Qb6#
- 2.b4#
- 1...Ba4
- 2.Qxa4#
- 2.Qb6#
- 2.b4#
- 1...Bc4
- 2.Bxc4#
- 2.Qa4#
- 2.Qb6#
- 1...Ba6
- 2.Qa4#
- 2.Qc3#
- 2.Qb6#
- 2.Qc7#
- 2.b4#
- 1...Bxc6!
- threat
- 1.Qd6?
- 1...Bf1
- 2.Bc4#
- 2.Qa3#
- 2.Qb6#
- 1...Be2
- 2.Bc4#
- 2.Qa3#
- 2.Qb6#
- 1...Bd3
- 2.Bc4#
- 2.Qa3#
- 2.Qb6#
- 1...Ba4
- 2.Qb6#
- 2.b4#
- 1...Bc4
- 2.Bxc4#
- 2.Qa3#
- 2.Qb6#
- 1...Ba6
- 2.Qa3#
- 2.Qb4#
- 2.Qc7#
- 2.Qb6#
- 2.Qd8#
- 1...Bd7
- 2.Qb6#
- 1...Be8
- 2.Qb6#
- 1...Bc6!
- 1...Bf1
- 1.Qh6?
- 1...Kb4
- 2.Qd2#
- 1...Bf1
- 2.Bc4#
- 2.Qb6#
- 1...Be2
- 2.Bc4#
- 2.Qb6#
- 1...Bd3
- 2.Bc4#
- 2.Qb6#
- 1...Ba4
- 2.Qb6#
- 2.b4#
- 1...Bc4
- 2.Bxc4#
- 2.Qb6#
- 1...Ba6
- 2.Qd2#
- 2.Qb6#
- 1...Bd7
- 2.Qb6#
- 1...Be8
- 2.Qb6#
- 1...Bc6!
- 1...Kb4
- 1.Qf8?
- 1...Ka6
- 2.Qa8#
- 1...Bc6
- 2.Qa8#
- 1...Bf1
- 2.Bc4#
- 2.Qa3#
- 1...Be2
- 2.Bc4#
- 2.Qa3#
- 1...Bd3
- 2.Bc4#
- 2.Qa3#
- 1...Ba4
- 2.Qa8#
- 1...Bc4
- 2.Bxc4#
- 2.Qa3#
- 1...Ba6
- 2.Qa3#
- 2.Qb4#
- 2.Qd8#
- 1...Bd7
- 2.Qa8#
- 1...Be8!
- 1...Ka6
- 1.Re8?
- Keys
- 1.Qf1!
- threat
- 2.Qxb5#
- 1...Kb4
- 2.Qe1#
- 1...Ka6
- 2.Qxb5#
- 1...Bxf1
- 2.Bc4#
- 1...Bc6
- 2.Bxc6#
- 1...Be2
- 2.Bc4#
- 1...Bd3
- 2.Bc4#
- 1...Ba4
- 2.b4#
- 1...Bc4
- 2.Bxc4#
- 1...Ba6
- 2.Qe1#
- 1...Bd7
- 2.Bc6#
- 1...Be8
- 2.Bc6#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(b);::QAB1(F)
- Tries
- Try
- R(E);
- Vars
- B(b);XR(E)::QAB1(F)
- B(b);N_GUARD::R(E)
- B(b);::QAB1(F)
- B(b);P_PINP(B)::QAB1(F)
- Refutation
- K(a);P_SPINB(b),S_FLIGHT
- Try
- Q(F);CHECK
- Refutation
- K(a);P_SPINB(b),S_FLIGHT
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- K(a);P_SPINB(b),S_FLIGHT::R1(G),XB(b)
- Refutation
- B(b);XQ(F)
- Try
- Q(F);
- Vars
- B(b);::QAB1(F)
- Refutation
- B(b);
- Try
- Q(F);
- Vars
- K(a);P_SPINB(b),S_FLIGHT::QAB(F)
- B(b);::QAB1(F)
- Refutation
- B(b);
- Try
- Q(F);
- Vars
- K(a);P-FLIGHT::QAR2(F)
- B(b);N_GUARD::QAR(F)
- Refutation
- B(b);
- Try
- Actual
- Q(F);
- Threat
- QAR1(F),XB(b)
- Vars
- K(a);P_SPINB(b),S_FLIGHT::QAB(F)
- K(a);P-FLIGHT,P_SPINB(b)::QAB1(F),XB(b)
- B(b);OGATEB,XQ(F)::R(E)+B(D)
- B(b);OGATEB::R(E)+B(D),XB(b)
- B(b);OGATEB::R(E)+B(D)
- B(b);SBLOCK::P(B)
- B(b);OGATEB,P_PINP(B)::R(E)+B(D),XB(b)
- B(b);SBLOCK::QAB(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).