MESON Chess Problem Database
Problem Display
PID: 107833 (5q1b/8/4p3/2r2pp1/1Q6/B4n1r/1PB3R1/KNk3N1 w - - 0 1)
Burbach, Johannes Jacob
Haagsche Post, 1943
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.bxc3#
- 2.b3#
- 1...Re5
- 2.b3#
- 1...Bxb2+
- 2.Bxb2#
- 2.Qxb2#
- 1...Bc3
- 2.bxc3#
- 1...Se1
- 2.Qxe1#
- 2.Qd2#
- 1...Sxg1
- 2.Qe1#
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qe1#
- 2.Qd2#
- 1...Sd4
- 2.Qe1#
- 2.Qd2#
- 2.b3#
- 1...Sh4
- 2.Qe1#
- 2.Qd2#
- 1...Se5
- 2.Qe1#
- 2.Qd2#
- 2.b3#
- 1...e5
- 2.b3#
- 1...Rc3
- Tries
- 1.Sc3?
- threat
- 2.Sa2#
- 2.b3#
- 1...Rxc3
- 2.bxc3#
- 2.b3#
- 1...Bxc3
- 2.bxc3#
- 1...Qa8
- 2.Sa2#
- 1...Ra5
- 2.Sa2#
- 1...Sd2!
- threat
- 1.Bb3?
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 1...Sxg1
- 2.Rxg1#
- 2.Qe1#
- 2.Qd2#
- 1...Re5
- 2.Qc3#
- 2.Qc4#
- 1...Sd4
- 2.Qe1#
- 2.Qd2#
- 1...Rc2!
- threat
- 1.Ba4?
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 2.Qxb2#
- 1...Sxg1
- 2.Rxg1#
- 2.Qe1#
- 2.Qd2#
- 1...Re5
- 2.Qc3#
- 2.Qc4#
- 1...Sd4
- 2.Qe1#
- 2.Qd2#
- 1...Rc2!
- threat
- 1.Qc3?
- threat
- 2.Se2#
- 2.b3#
- 2.b4#
- 1...Bxc3
- 2.bxc3#
- 1...Sxg1
- 2.Rxg1#
- 2.Qe1#
- 2.Qd2#
- 2.b3#
- 2.b4#
- 1...Qa8
- 2.Se2#
- 1...Rc4
- 2.Se2#
- 2.b4#
- 1...Ra5
- 2.Se2#
- 1...Rb5
- 2.Se2#
- 2.b4#
- 1...Rd5
- 2.Se2#
- 2.b4#
- 1...Re5
- 2.Bb3#
- 2.Ba4#
- 2.b4#
- 1...Rc6
- 2.Se2#
- 2.b4#
- 1...Rc7
- 2.Se2#
- 2.b4#
- 1...Rc8
- 2.Se2#
- 2.b4#
- 1...Sd4
- 2.Qe1#
- 2.Qd2#
- 2.b3#
- 2.b4#
- 1...Rxc3!
- threat
- 1.Qxc5?
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 1...Sxg1
- 2.Rxg1#
- 2.Qxg1#
- 1...Bc3
- 2.bxc3#
- 1...Sd4
- 2.b3#
- 1...Qxc5!
- threat
- 1.Qc4?
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 1...Sxg1
- 2.Rxg1#
- 2.Qf1#
- 1...Re5
- 2.Bb3#
- 2.Ba4#
- 2.b4#
- 1...Bc3
- 2.bxc3#
- 1...Sd4
- 2.Qf1#
- 2.b3#
- 1...Rxc4!
- threat
- 1.Qe4?
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 1...Rxc2
- 2.Qxc2#
- 1...Sxg1
- 2.Rxg1#
- 2.Qe1#
- 1...Sd4
- 2.Qe1#
- 2.b3#
- 1...fxe4!
- threat
- 1.Qf4+?
- 1...Sd2
- 2.Qxd2#
- 1...gxf4!
- 1...Sd2
- 1.Sc3?
- Keys
- 1.Qa4!
- threat
- 2.Se2#
- 1...Bxb2+
- 2.Bxb2#
- 1...Rxc2
- 2.Qxc2#
- 1...Sxg1
- 2.Rxg1#
- 1...Re5
- 2.b4#
- 1...Sd4
- 2.b3#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(d);N_PINP(D)::B(G)+P(D)
- B(i);::B(G)+P(D),XB(i)
- S(b);N_GUARD::QAB1(H),XS(b)
- P(g);N_PINP(D)::B(G)+P(D)
- Tries
- Try
- S(B);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- B(i);OGATE,P_PINP(D),XS(B)::B(G)+P(D),XB(i)
- Q(h);P_PINB(G)::S(B)
- R(d);P_PINB(G)::S(B)
- Refutation
- S(b);
- Try
- B(E);
- Threat
- S(C)
- Vars
- B(i);CHECK,OGATE,P_SPINB(i),XP(D)::B(G),XB(i)
- Refutation
- R(d);
- Try
- B(E);
- Threat
- S(C)
- Refutation
- R(d);
- Try
- Q(H);N_SPINP(D)
- Threat
- DUALS(3)
- Vars
- B(i);OGATE,P_PINP(D),XQ(H)::B(G)+P(D),XB(i)
- Q(h);P_PINB(G)::S(C)
- R(d);P_PINB(G)::S(C)
- Refutation
- R(d);XQ(H)
- Try
- Q(H);XR(d)
- Threat
- S(C)
- Vars
- B(i);CHECK,OGATE,P_SPINB(i),XP(D)::B(G),XB(i)
- B(i);::B(G)+P(D),XB(i)
- S(b);N_PINP(D)::B(G)+P(D)
- Refutation
- Q(h);XQ(H)
- Try
- Q(H);
- Threat
- S(C)
- Vars
- B(i);CHECK,OGATE,P_SPINB(i),XP(D)::B(G),XB(i)
- B(i);::B(G)+P(D),XB(i)
- Refutation
- R(d);XQ(H)
- Try
- Q(H);
- Threat
- S(C)
- Vars
- B(i);CHECK,OGATE,P_SPINB(i),XP(D)::B(G),XB(i)
- R(d);OGATE,XB(E)::QAR1(H),XR(d)
- Refutation
- P(e);XQ(H)
- Try
- Q(H);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(H),XS(b)
- Refutation
- P(f);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- S(C)
- Vars
- B(i);CHECK,OGATE,P_SPINB(i),XP(D)::B(G),XB(i)
- R(d);OGATE,XB(E)::QAR1(H),XR(d)
- S(b);OGATE,XS(C)::R(F),XS(b)
- R(d);N_PINP(D)::B(G)+P(D)
- S(b);N_PINP(D)::B(G)+P(D)
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).