MESON Chess Problem Database
Problem Display
PID: 16613 (6bK/1p4Qp/2qp4/4r2N/5R1p/R1b1k3/6B1/2N1B3 w - - 0 1)
Hassberg, Eric Manfred
American Chess Bulletin, 1942
#2
8 + 9
| 5088 | How to Solve Chess Problems | 1945 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Rxc3#
- 1...Qf3
- 2.Rxc3#
- 1...Qa4
- 2.Rxc3#
- 1...Qd7
- 2.Rxc3#
- 1...Qe8
- 2.Rxc3#
- 1...Qb6
- 2.Rxc3#
- 1...Re4
- 2.Rf3#
- 1...Ra5
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Rc5
- 2.Qd4#
- 1...Rd5
- 2.Re4#
- 1...Rf5
- 2.Qd4#
- 1...Rg5
- 2.Qd4#
- 1...Rxh5
- 2.Qd4#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Re8
- 2.Qd4#
- 1...d5
- 2.Qxe5#
- 1...Qxg2
- Tries
- 1.Bxc6?
- threat
- 2.Rxc3#
- 2.Qg1#
- 1...Rxh5
- 2.Rf3#
- 2.Qd4#
- 1...Re4
- 2.Rxc3#
- 2.Qxc3#
- 1...Ra5
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Rb5
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Rc5
- 2.Rf3#
- 2.Qd4#
- 1...Rf5
- 2.Rxc3#
- 2.Qxc3#
- 2.Qd4#
- 1...Rg5
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Re6
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Re7
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Re8
- 2.Rxc3#
- 2.Rf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Bb3
- 2.Qg1#
- 1...Bc4
- 2.Qg1#
- 1...Rd5!
- threat
- 1.Qxe5+?
- 1...Qe4
- 2.Rxc3#
- 2.Rf3#
- 2.Rxe4#
- 1...dxe5!
- 1...Qe4
- 1.Qg3+?
- 1...Qf3
- 2.Rxc3#
- 2.Qxf3#
- 1...hxg3!
- 1...Qf3
- 1.Bxc6?
- Keys
- 1.Bh1!
- threat
- 2.Qg1#
- 1...Qxh1
- 2.Rxc3#
- 1...Rxh5
- 2.Qd4#
- 1...Qg2
- 2.Rxc3#
- 1...Qf3
- 2.Rxc3#
- 1...Re4
- 2.Rf3#
- 1...Ra5
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Rc5
- 2.Qd4#
- 1...Rd5
- 2.Re4#
- 1...Rf5
- 2.Qd4#
- 1...Rg5
- 2.Qd4#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Re8
- 2.Qd4#
- threat
- 1.Bh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(e);N_GUARD,XB(C)::R(D),XB(a)
- Q(e);N_GUARD::R(D),XB(a)
- R(d);P_PINQ(G),SBLOCK,S_CUTQ(e)::R1(E)
- R(d);OGATE,P_PINQ(G)::QAB1(G)
- R(d);N_GUARD,P_PINQ(G),S_CUTQ(e)::R1(E)
- R(d);OGATE,P_PINQ(G),XS(F)::QAB1(G)
- P(f);N_GUARD,S_CUTQ(e)::QAR2(G),XR(d)
- Tries
- Try
- B(C);XQ(e)
- Threat
- DUALS(2)
- Vars
- B(i);N_SPINB(a)::QAB(G)
- B(i);::QAB(G)
- Refutation
- R(d);P_PINQ(G)
- Try
- Q(G);CHECK,P_SPINQ(G),XR(d)
- Refutation
- P(f);XQ(G)
- Try
- Q(G);CHECK
- Refutation
- P(c);XQ(G)
- Try
- Actual
- B(C);
- Threat
- QAB(G)
- Vars
- Q(e);N_GUARD,XB(C)::R(D),XB(a)
- R(d);OGATE,P_PINQ(G),XS(F)::QAB1(G)
- Q(e);N_GUARD::R(D),XB(a)
- R(d);P_PINQ(G),SBLOCK,S_CUTQ(e)::R1(E)
- R(d);OGATE,P_PINQ(G)::QAB1(G)
- R(d);N_GUARD,P_PINQ(G),S_CUTQ(e)::R1(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).