MESON Chess Problem Database
Problem Display
PID: 16840 (2N3b1/1pp1pn2/2N1r3/1Pk3pq/Pb2QP2/r2PK2p/8/5BB1 w - - 0 1)
Macleod, Norman Alasdair
The Problemist, 1943
#2
10 + 12
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
| 102 | Probleemblad | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Qe2+
- 2.Kxe2#
- 1...Qf3+
- 2.Kxf3#
- 1...Qg6
- 2.Ke2#
- 2.Kf3#
- 1...Qh6
- 2.Ke2#
- 2.Kf3#
- 1...Qh7
- 2.Ke2#
- 2.Kf3#
- 1...Ra1
- 2.d4#
- 1...Ra2
- 2.d4#
- 1...Rc3
- 2.Kd2#
- 1...Rxd3+
- 2.Kxd3#
- 1...Rxa4
- 2.d4#
- 1...Rxe4+
- 2.Kxe4#
- 1...Rxc6
- 2.Qc4#
- 2.Qd4#
- 1...Rd6
- 2.Qc4#
- 1...Rf6
- 2.Qc4#
- 2.Qd4#
- 1...Rg6
- 2.Qc4#
- 2.Qd4#
- 1...Rh6
- 2.Qc4#
- 2.Qd4#
- 1...Bd2+
- 2.Kxd2#
- 1...Se5
- 2.Qd4#
- 1...gxf4+
- 2.Kxf4#
- 1...g4
- 2.Ke2#
- 1...Qe2+
- Tries
- 1.Se5?
- threat
- 2.Sd7#
- 2.Qc4#
- 2.Qd4#
- 1...Qe2+
- 2.Kxe2#
- 1...Qf3+
- 2.Kxf3#
- 1...Rxd3+
- 2.Kxd3#
- 2.Sxd3#
- 1...Bd2+
- 2.Kxd2#
- 1...gxf4+
- 2.Kxf4#
- 1...Rxa4
- 2.Qc4#
- 2.d4#
- 1...Sxe5
- 2.Qd4#
- 1...Rc3
- 2.Kd2#
- 2.Sd7#
- 2.Qd4#
- 1...Rd6
- 2.Qc4#
- 1...Bc3
- 2.Sd7#
- 2.Qc4#
- 1...Sd6
- 2.Sd7#
- 2.Qd4#
- 1...Rxe5!
- threat
- 1.Qe5+?
- 1...Sxe5
- 2.Ke4#
- 1...Rxe5+!
- 1...Sxe5
- 1.Qxe6?
- threat
- 2.Ke4#
- 2.Qc4#
- 1...Qe2+
- 2.Kxe2#
- 1...Qf3+
- 2.Kxf3#
- 1...Rxd3+
- 2.Kxd3#
- 1...Bd2+
- 2.Kxd2#
- 1...gxf4+
- 2.Ke4#
- 2.Kxf4#
- 1...Rxa4
- 2.Qc4#
- 2.d4#
- 1...Qg4
- 2.Qc4#
- 1...Qg6
- 2.Ke2#
- 2.Kf3#
- 2.Qc4#
- 1...Qh4
- 2.Qc4#
- 1...Qh7
- 2.Ke2#
- 2.Kf3#
- 2.Qc4#
- 1...Qh8
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 2.d4#
- 1...Rc3
- 2.Kd2#
- 2.Ke4#
- 1...Be1
- 2.Qc4#
- 1...Bc3
- 2.Qc4#
- 1...Bh7
- 2.Qc4#
- 1...Se5
- 2.Ke4#
- 1...Sh6
- 2.Ke4#
- 1...Sd8
- 2.Ke4#
- 1...Sh8
- 2.Ke4#
- 1...h2
- 2.Qc4#
- 1...Sd6!
- threat
- 1.Se5?
- Keys
- 1.Sb8!
- threat
- 2.Sd7#
- 1...Qe2+
- 2.Kxe2#
- 1...Qf3+
- 2.Kxf3#
- 1...Rxd3+
- 2.Kxd3#
- 1...Rxe4+
- 2.Kxe4#
- 1...Bd2+
- 2.Kxd2#
- 1...gxf4+
- 2.Kxf4#
- 1...Rxa4
- 2.d4#
- 1...Rd6
- 2.Qc4#
- 1...Se5
- 2.Qd4#
- threat
- 1.Sb8!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(f);CHECK::B(B)+K(D),XQ(f)
- R(a);N_PINP(C)::P(C)
- R(a);::B(B)+K(D)
- R(a);CHECK,XP(C)::B(B)+K(D),XR(a)
- R(a);N_PINP(C),XP(E)::P(C)
- R(g);CHECK,XQ(F)::B(B)+K(D),XR(g)
- R(g);N_PINQ(F)::QAR1(F)
- B(c);CHECK::B(B)+K(D),XB(c)
- S(k);N_PINQ(F)::QAB1(F)
- P(e);CHECK,XP(G)::B(B)+K(D),XP(e)
- P(e);::B(B)+K(D)
- Tries
- Try
- S(I);N_SPINQ(F)
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK::B(B)+K(D),XQ(f)
- B(c);CHECK::B(B)+K(D),XB(c)
- P(e);CHECK,XP(G)::B(B)+K(D),XP(e)
- S(k);XS(I)::QAB1(F)
- R(g);::QAR1(F)
- Refutation
- R(g);P_PINQ(F),XS(I)
- Try
- Q(F);CHECK
- Vars
- S(k);XQ(F)::B(B)+K(D)
- Refutation
- R(g);CHECK,XQ(F)
- Try
- Q(F);N_SPINQ(F),XR(g)
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK::B(B)+K(D),XQ(f)
- R(a);CHECK,XP(C)::B(B)+K(D),XR(a)
- B(c);CHECK::B(B)+K(D),XB(c)
- Q(f);::QAR1(F)
- B(c);::QAR1(F)
- B(c);N_PINP(C)::QAR1(F)
- B(l);::QAR1(F)
- S(k);::B(B)+K(D)
- P(b);::QAR1(F)
- Refutation
- S(k);
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- Q(f);CHECK::B(B)+K(D),XQ(f)
- R(a);CHECK,XP(C)::B(B)+K(D),XR(a)
- R(g);CHECK,XQ(F)::B(B)+K(D),XR(g)
- B(c);CHECK::B(B)+K(D),XB(c)
- P(e);CHECK,XP(G)::B(B)+K(D),XP(e)
- R(a);N_PINP(C),XP(E)::P(C)
- R(g);N_PINQ(F)::QAR1(F)
- S(k);N_PINQ(F)::QAB1(F)
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).