MESON Chess Problem Database
Problem Display
PID: 11444 (8/8/2Q5/8/8/6B1/2p2KPr/7k w - - 0 1)
Sokolov, GLJ
Xadrez Brasileiro, 1938
#2
4 + 3
| 3713 | Snap | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rxg2+
- 2.Qxg2#
- 1...Rh3
- 2.gxh3#
- 1...Rh6
- 2.Qxh6#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rxg2+
- Tries
- 1.Bf4?
- 1...Rxg2+
- 2.Qxg2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rh3
- 2.gxh3#
- 1...Rh4
- 2.g4#
- 1...Rh6
- 2.Qxh6#
- 1...Rh7
- 2.g4#
- 1...Rh8
- 2.g4#
- 1...Rh5!
- 1...Rxg2+
- 1.Bd6?
- 1...Rxg2+
- 2.Qxg2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rh3
- 2.gxh3#
- 1...Rh4
- 2.g4#
- 1...Rh6
- 2.g4#
- 1...Rh7
- 2.g4#
- 1...Rh8
- 2.g4#
- 1...Rh5!
- 1...Rxg2+
- 1.Bc7?
- 1...Rxg2+
- 2.Qxg2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rh3
- 2.gxh3#
- 1...Rh4
- 2.g4#
- 1...Rh6
- 2.Qxh6#
- 1...Rh7
- 2.g4#
- 1...Rh8
- 2.g4#
- 1...Rh5!
- 1...Rxg2+
- 1.Bb8?
- 1...Rxg2+
- 2.Qxg2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rh3
- 2.gxh3#
- 1...Rh4
- 2.g4#
- 1...Rh6
- 2.Qxh6#
- 1...Rh7
- 2.g4#
- 1...Rh8
- 2.g4#
- 1...Rh5!
- 1...Rxg2+
- 1.Qc3?
- threat
- 2.Qe1#
- 1...c1Q
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rxg2+!
- threat
- 1.Qc4?
- threat
- 2.Qf1#
- 1...c1Q
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rxg2+!
- threat
- 1.Qh6?
- threat
- 2.Qc1#
- 2.Qxh2#
- 1...c1Q
- 2.Qxc1#
- 2.Qxh2#
- 1...c1S
- 2.Qxc1#
- 2.Qxh2#
- 1...c1B
- 2.Qxc1#
- 2.Qxh2#
- 1...c1R
- 2.Qxc1#
- 2.Qxh2#
- 1...Rh3
- 2.Qc1#
- 2.Qxh3#
- 1...Rh4
- 2.Qc1#
- 2.Qxh4#
- 1...Rh5
- 2.Qc1#
- 2.Qxh5#
- 1...Rxh6!
- threat
- 1.Bf4?
- Keys
- 1.Be5!
- 1...Rxg2+
- 2.Qxg2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rh3
- 2.gxh3#
- 1...Rh4
- 2.g4#
- 1...Rh5
- 2.g4#
- 1...Rh6
- 2.Qxh6#
- 1...Rh7
- 2.g4#
- 1...Rh8
- 2.g4#
- 1...Rxg2+
- 1.Be5!
Anticipated by 6769(1933)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B),OGATEB::QAR(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- Tries
- Try
- B(C);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B)
- R(c);N_PINP(B),OGATEB::QAR(D),XR(c)
- Refutation
- R(c);N_PINP(B)
- Try
- B(C);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B)
- Refutation
- R(c);N_PINP(B)
- Try
- B(C);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B)
- R(c);N_PINP(B),OGATEB::QAR(D),XR(c)
- Refutation
- R(c);N_PINP(B)
- Try
- B(C);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B)
- R(c);N_PINP(B),OGATEB::QAR(D),XR(c)
- Refutation
- R(c);N_PINP(B)
- Try
- Q(D);
- Threat
- QAR(D)
- Vars
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XR(b)
- Refutation
- R(c);CHECK,XP(B)
- Try
- Q(D);
- Threat
- QAR2(D)
- Vars
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XR(b)
- Refutation
- R(c);CHECK,XP(B)
- Try
- Q(D);P_PINR(c)
- Threat
- DUALS(2)
- Refutation
- R(c);N_PINP(B),N_SPINR(c),XQ(D)
- Try
- Actual
- B(C);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(B)::QAB1(D),XR(c)
- P(b);OGATE::QAR(D),XQ(b)
- P(b);OGATE::QAR(D),XS(b)
- P(b);OGATE::QAR(D),XB(b)
- P(b);OGATE::QAR(D),XR(b)
- R(c);N_PINP(B)::QAB(D)+P(B),XR(c)
- R(c);N_PINP(B)::QAB(D)+P(B)
- R(c);N_PINP(B),OGATEB::QAR(D),XR(c)
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).