MESON Chess Problem Database
Problem Display
PID: 81574 (1n1r4/NR3P1P/3p2BK/rp4Rp/1Qbk4/1p6/Nb3P2/5n2 w - - 0 1)
Macleod, Norman Alasdair
Mat, 1981
#2
10 + 11
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Sxb5#
- 1...Ra3
- 2.Sxb5#
- 1...Ra4
- 2.Sxb5#
- 1...Ra6
- 2.Sxb5#
- 1...Rd7
- 2.h8Q#
- 2.h8B#
- 1...Bc1
- 2.Qc3#
- 1...Ba3
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...bxa2
- 2.Qxb2#
- 1...Rxa2
- Tries
- 1.Sc1?
- threat
- 2.Se2#
- 2.Sxb3#
- 1...Ra3
- 2.Se2#
- 2.Sxb5#
- 1...Re8
- 2.Sxb3#
- 1...Sd2
- 2.Se2#
- 1...Sg3
- 2.Sxb3#
- 1...Bxc1!
- threat
- 1.Sc3?
- threat
- 2.Se2#
- 2.Rd5#
- 1...Re8
- 2.Rd5#
- 1...Bc1
- 2.Se2#
- 1...Se3
- 2.Se2#
- 1...Sg3
- 2.Rd5#
- 1...d5
- 2.Se2#
- 1...Bxc3!
- threat
- 1.Rbxb5?
- threat
- 2.Rgd5#
- 1...Rxb5
- 2.Sxb5#
- 1...Bc1
- 2.Qc3#
- 1...d5
- 2.Qc5#
- 1...Se3!
- threat
- 1.Qd2+?
- 1...Bd3
- 2.Qxd3#
- 1...Sxd2!
- 1...Bd3
- 1.f8Q?
- threat
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Rxa2
- 2.Sxb5#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Rxa7
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...bxa2
- 2.Qg7#
- 2.Qxb2#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Rc8
- 2.Qfxd6#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Ra3
- 2.Sxb5#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Ra4
- 2.Sxb5#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Ra6
- 2.Sxb5#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Rd7
- 2.Qf4#
- 2.Qf6#
- 1...Re8
- 2.Qfxd6#
- 1...Ba1
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Bc1
- 2.Qc3#
- 2.Qg7#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Ba3
- 2.Qc3#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Bc3
- 2.Qxc3#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Sd2
- 2.Qg7#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Sh2
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Se3
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Sg3
- 2.Qg7#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Sa6
- 2.Sc6#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Sc6
- 2.Sxc6#
- 2.Qf4#
- 1...Sd7
- 2.Sc6#
- 2.Qfxd6#
- 2.Qf4#
- 1...h4
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...d5
- 2.Qbc5#
- 2.Qfc5#
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.h8Q#
- 2.h8B#
- 1...Rxf8!
- threat
- 1.Sc1?
- Keys
- 1.Rd7!
- threat
- 2.Qc5#
- 1...Rxa2
- 2.Sxb5#
- 1...Rxd7
- 2.h8Q#
- 2.h8B#
- 1...Sxd7
- 2.Sc6#
- 1...bxa2
- 2.Qxb2#
- 1...Rc8
- 2.Rxd6#
- 1...Ba3
- 2.Qc3#
- 1...Sa6
- 2.Sc6#
- 1...d5
- 2.Rgxd5#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(f);N_GUARD,XS(A)::S(G),XP(g)
- R(f);N_GUARD::S(G),XP(g)
- R(k);N_GUARD::P=Q
- B(b);N_GUARD,P_PINR(D)::QAB1(C)
- B(b);N_GUARD::QAB1(C)
- B(b);N_GUARD::QAB1(C),XB(b)
- S(j);N_GUARD::S(G)
- S(j);N_GUARD::S(G),XS(j)
- P(c);OGATE,XS(A)::QAB(C),XB(b)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(k);::S(A),XP(c)
- S(a);::S(A)
- S(a);::S(A),XP(c)
- Refutation
- B(b);P_PINR(D),XS(A)
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(k);::R1(D)
- B(b);P_PINR(D)::S(A)
- S(a);::S(A)
- S(a);::R1(D)
- P(i);::S(A)
- Refutation
- B(b);XS(A)
- Try
- R(H);XP(g)
- Threat
- R1(D)
- Vars
- R(f);XR(H)::S(G),XR(f)
- B(b);N_GUARD,P_PINR(D)::QAB1(C)
- P(i);N_GUARD::QAB1(C)
- Refutation
- S(a);
- Try
- Q(C);CHECK,N_PINB(d)
- Vars
- B(d);N_GUARD,P_SPINB(d)::QAR1(C),XB(d)
- Refutation
- S(a);XQ(C)
- Try
- P(I);
- Threat
- DUALS(5)
- Vars
- R(k);N_GUARD::QAR2(I),XP(i)
- Refutation
- R(k);XQ(I)
- Try
- Actual
- R(H);P_PINP(i)
- Threat
- QAB1(C)
- Vars
- R(f);N_GUARD,XS(A)::S(G),XP(g)
- R(k);N_GUARD,N_SPINP(i),XR(H)::P=Q
- S(j);N_GUARD,N_SPINP(i),XR(H)::S(G)
- P(c);OGATE,XS(A)::QAB(C),XB(b)
- R(k);N_GUARD::R(H),XP(i)
- B(b);N_GUARD::QAB1(C)
- S(j);N_GUARD::S(G)
- P(i);::R1(D),XP(i)
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).