MESON Chess Problem Database
Problem Display
PID: 214568 (5bb1/6p1/1B2Q3/R4n2/1k2r3/1P6/1K2P3/8 w - - 0 1)
Lenau, John W
Newark Sunday Call, 1877
#2
6 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Se7
- 2.Qd6#
- 1...Se7
- Tries
- 1.Bf2?
- threat
- 2.Be1#
- 2.Qb6#
- 1...Kxa5
- 2.Qb6#
- 1...Rxe6
- 2.Be1#
- 1...Bxe6
- 2.Be1#
- 1...Re3
- 2.Qb6#
- 1...Rc4
- 2.Qb6#
- 1...Rd4
- 2.Qb6#
- 1...Re5
- 2.Be1#
- 1...Bc5
- 2.Be1#
- 1...Bd6
- 2.Be1#
- 1...Sd4
- 2.Be1#
- 1...Sd6
- 2.Be1#
- 1...Rxe2+!
- threat
- 1.Bc5+?
- 1...Kxa5
- 2.Qb6#
- 1...Bxc5!
- 1...Kxa5
- 1.Qd7?
- threat
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 2.Qd2#
- 1...Bxb3
- 2.Qb5#
- 1...Re3
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Rc4
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Rd4
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Re5
- 2.Ra4#
- 2.Qa4#
- 2.Qd2#
- 1...Bd6
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Bc4
- 2.Ra4#
- 2.Qa4#
- 2.Qd2#
- 1...Bd5
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Sd4
- 2.Ra4#
- 2.Qa4#
- 1...Sd6
- 2.Ra4#
- 2.Qa4#
- 1...Rxe2+!
- threat
- 1.Qxe4+?
- 1...Bc4
- 2.Qxc4#
- 1...Sd4!
- 1...Bc4
- 1.Qc6?
- threat
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 2.Qc3#
- 1...Bxb3
- 2.Qb5#
- 2.Qc3#
- 1...Re3
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Rc4
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 1...Re5
- 2.Ra4#
- 2.Qa4#
- 2.Qc3#
- 1...Bc5
- 2.Ra4#
- 2.Rb5#
- 2.Qa4#
- 2.Qb5#
- 2.Qxc5#
- 1...Bc4
- 2.Ra4#
- 2.Qa4#
- 1...Sd4
- 2.Ra4#
- 2.Qa4#
- 2.Qc3#
- 1...Sd6
- 2.Ra4#
- 2.Qa4#
- 2.Qc3#
- 2.Qc5#
- 1...Rxe2+!
- threat
- 1.Bf2?
- Keys
- 1.Be3!
- threat
- 2.Bd2#
- 2.Qb6#
- 1...Kxa5
- 2.Qb6#
- 1...Rxe3
- 2.Qb6#
- 1...Rxe6
- 2.Bd2#
- 1...Bxe6
- 2.Bd2#
- 1...Sxe3
- 2.Qb6#
- 1...Rc4
- 2.Qb6#
- 1...Rd4
- 2.Qb6#
- 1...Re5
- 2.Bd2#
- 1...Bc5
- 2.Bd2#
- 1...Bd6
- 2.Bd2#
- 1...Sd4
- 2.Bd2#
- 1...Sd6
- 2.Bd2#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 1
- Sets
- S(c);N_GUARD,S_CUTB(e)::QAB(F)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- K(a);S_FLIGHT,XR(D)::QAB1(F)
- R(b);XQ(F)::B(E)
- B(f);XQ(F)::B(E)
- R(b);::QAR2(F)
- R(b);::B(E)
- B(e);::B(E)
- S(c);::B(E)
- Refutation
- R(b);CHECK,XP(B)
- Try
- B(E);CHECK
- Vars
- K(a);S_FLIGHT,XR(D)::QAB1(F)
- Refutation
- B(e);XB(E)
- Try
- Q(F);
- Threat
- DUALS(5)
- Vars
- B(f);XP(C)::QAR1(F)
- Refutation
- R(b);CHECK,XP(B)
- Try
- Q(F);CHECK,XR(b)
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(F);
- Threat
- DUALS(5)
- Refutation
- R(b);CHECK,XP(B)
- Try
- Actual
- B(E);
- Threat
- DUALS(2)
- Vars
- K(a);S_FLIGHT,XR(D)::QAB1(F)
- R(b);XB(E)::QAR2(F)
- R(b);XQ(F)::B(E)
- B(f);XQ(F)::B(E)
- S(c);XB(E)::QAR2(F)
- R(b);::QAR2(F)
- R(b);::B(E)
- B(e);::B(E)
- S(c);::B(E)
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).