MESON Chess Problem Database
Problem Display
PID: 99272 (8/8/3Q1pB1/4rNpp/4P1k1/4P3/3p2K1/8 w - - 0 1)
Loewenton, Leon
Magyar Sakkelet, 1952
#2
6 + 6
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rxe4
- 2.Qg3#
- 1...Ra5
- 2.Qg3#
- 1...Rb5
- 2.Qg3#
- 1...Rc5
- 2.Qg3#
- 1...Rd5
- 2.Qg3#
- 1...Rxf5
- 2.Qg3#
- 1...Re6
- 2.Qg3#
- 1...Re7
- 2.Qg3#
- 1...Re8
- 2.Qg3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...h4
- 2.Sh6#
- 1...Rxe4
- Tries
- 1.Bf7?
- 1...Rxf5
- 2.Qg3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Ra5
- 2.Qg3#
- 1...Rb5
- 2.Qg3#
- 1...Rc5
- 2.Qg3#
- 1...Rd5
- 2.Qg3#
- 1...Re6
- 2.Qg3#
- 1...Re7
- 2.Qg3#
- 1...Re8
- 2.Qg3#
- 1...h4
- 2.Sh6#
- 1...Rxe4!
- 1...Rxf5
- 1.Bh7?
- 1...Rxe4
- 2.Qg3#
- 1...Rxf5
- 2.Qg3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Ra5
- 2.Qg3#
- 1...Rb5
- 2.Qg3#
- 1...Rc5
- 2.Qg3#
- 1...Rd5
- 2.Qg3#
- 1...Re6
- 2.Qg3#
- 1...Re7
- 2.Qg3#
- 1...Re8
- 2.Qg3#
- 1...h4!
- 1...Rxe4
- 1.Be8?
- 1...Rxf5
- 2.Qg3#
- 1...Rxe8
- 2.Qg3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Ra5
- 2.Qg3#
- 1...Rb5
- 2.Qg3#
- 1...Rc5
- 2.Qg3#
- 1...Rd5
- 2.Qg3#
- 1...Re6
- 2.Qg3#
- 1...Re7
- 2.Qg3#
- 1...h4
- 2.Sh6#
- 1...Rxe4!
- 1...Rxf5
- 1.Qxe5?
- threat
- 2.Qg3#
- 1...h4
- 2.Sh6#
- 1...fxe5!
- threat
- 1.Qxd2?
- threat
- 2.Qd1#
- 2.Qe2#
- 1...Rd5
- 2.Qe2#
- 1...Rxf5!
- threat
- 1.Qd3?
- threat
- 2.Qe2#
- 1...d1Q
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...Rxf5!
- threat
- 1.Bf7?
- Keys
- 1.Qd4!
- 1...Rxe4
- 2.Qxe4#
- 1...Rxf5
- 2.exf5#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Ra5
- 2.e5#
- 1...Rb5
- 2.e5#
- 1...Rc5
- 2.e5#
- 1...Rd5
- 2.exd5#
- 1...Re6
- 2.e5#
- 1...Re7
- 2.e5#
- 1...Re8
- 2.e5#
- 1...h4
- 2.Sh6#
- 1...Rxe4
- 1.Qd4!
Anticipated by 90294(1929)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);OGATE,XP(C)::QAR1(E)
- R(c);OGATE::QAR1(E)
- R(c);OGATE,XS(D)::QAR1(E)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- P(e);SBLOCK::S(D)
- Tries
- Try
- B(F);
- Vars
- R(c);OGATE,XS(D)::QAR1(E)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- R(c);OGATE::QAR1(E)
- P(e);SBLOCK::S(D)
- Refutation
- R(c);XP(C)
- Try
- B(F);
- Vars
- R(c);OGATE,XP(C)::QAR1(E)
- R(c);OGATE,XS(D)::QAR1(E)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- R(c);OGATE::QAR1(E)
- Refutation
- P(e);
- Try
- B(F);
- Vars
- R(c);OGATE,XS(D)::QAR1(E)
- R(c);OGATE,XB(F)::QAR1(E)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- R(c);OGATE::QAR1(E)
- P(e);SBLOCK::S(D)
- Refutation
- R(c);XP(C)
- Try
- Q(E);XR(c)
- Threat
- QAR1(E)
- Vars
- P(e);SBLOCK::S(D)
- Refutation
- P(f);XQ(E)
- Try
- Q(E);XP(a)
- Threat
- DUALS(2)
- Vars
- R(c);::QAB(E)
- Refutation
- R(c);XS(D)
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XB(a)
- Refutation
- R(c);XS(D)
- Try
- Actual
- Q(E);
- Vars
- R(c);OGATE,P_SPINR(c),XP(C)::QAR2(E),XR(c)
- R(c);OGATE,XS(D)::QAR(E)+P(C),XR(c)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- R(c);OGATE::QAR(E)+P(C)
- R(c);OGATE::QAR(E)+P(C),XR(c)
- P(e);SBLOCK::S(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).