MESON Chess Problem Database
Problem Display
PID: 139189 (6bk/Q2RnP2/1r1p2Pq/3N4/1p6/PP1p4/1Kp1p3/BBn1N2R w - - 0 1)
Janet, Frank
Canadian Courier (The), 1917
#2
12 + 11
| 56 | The Problemist | 1937 |
SOLUTION
- SOUND
- Sets
- 1...Qxh1
- 2.Kxc1#
- 1...Qh2
- 2.Kxc1#
- 1...Qh3
- 2.Kxc1#
- 1...Qh4
- 2.Kxc1#
- 1...Qh5
- 2.Kxc1#
- 1...Qh7
- 2.Kxc1#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 1...Rb8
- 2.Qd4#
- 1...Sa2
- 2.Kxa2#
- 1...Sxb3
- 2.Kxb3#
- 1...cxb1Q+
- 2.Kxb1#
- 1...cxb1S
- 2.Kxb1#
- 1...cxb1B
- 2.Kxb1#
- 1...cxb1R+
- 2.Kxb1#
- 1...d2
- 2.Kxc2#
- 1...bxa3+
- 2.Kxa3#
- 1...Qxh1
- Tries
- 1.Rxh6+?
- 1...Bh7
- 2.Kxc1#
- 2.Rxh7#
- 1...Kg7!
- 1...Bh7
- 1.f8Q?
- threat
- 2.Rxh6#
- 2.Qf6#
- 1...cxb1Q+
- 2.Kxb1#
- 1...cxb1R+
- 2.Kxb1#
- 1...bxa3+
- 2.Kxa3#
- 1...Qxh1
- 2.Kxc1#
- 2.Qf6#
- 1...Sxd5
- 2.Rxh6#
- 2.Qg7#
- 1...Qh2
- 2.Kxc1#
- 2.Rxh2#
- 2.Qf6#
- 1...Qh3
- 2.Kxc1#
- 2.Rxh3#
- 2.Qf6#
- 1...Qh4
- 2.Kxc1#
- 2.Rxh4#
- 2.Qf6#
- 1...Qh5
- 2.Kxc1#
- 2.Rxh5#
- 2.Qf6#
- 1...Qh7
- 2.Kxc1#
- 2.Rxh7#
- 2.Qf6#
- 2.g7#
- 1...Sf5!
- threat
- 1.Rxh6+?
- Keys
- 1.Rd8!
- 1...cxb1Q+
- 2.Kxb1#
- 1...cxb1R+
- 2.Kxb1#
- 1...bxa3+
- 2.Kxa3#
- 1...Kg7
- 2.fxg8Q#
- 2.fxg8R#
- 1...Qxh1
- 2.Kxc1#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd5
- 2.Rxg8#
- 2.fxg8Q#
- 2.fxg8R#
- 1...Sxg6
- 2.fxg8Q#
- 2.fxg8R#
- 1...cxb1S
- 2.Kxb1#
- 1...cxb1B
- 2.Kxb1#
- 1...Qh2
- 2.Kxc1#
- 1...Qh3
- 2.Kxc1#
- 1...Qh4
- 2.Kxc1#
- 1...Qh5
- 2.Kxc1#
- 1...Qh7
- 2.Kxc1#
- 2.Rxh7#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 1...Rb8
- 2.Qd4#
- 1...Sa2
- 2.Kxa2#
- 1...Sf5
- 2.Rxg8#
- 2.fxg8Q#
- 2.fxg8R#
- 1...Sc6
- 2.Rxg8#
- 2.fxg8Q#
- 2.fxg8R#
- 1...Sc8
- 2.Rxg8#
- 2.fxg8Q#
- 2.fxg8R#
- 1...d2
- 2.Kxc2#
- 1...cxb1Q+
- 1.Rd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(h);N_SPINQ(h),XR(D)::B(A)+K(E),XS(a)
- Q(h);::B(A)+K(E),XS(a)
- R(f);OGATE::QAB(J)
- S(a);::B(A)+K(E),XS(a)
- S(a);XP(G)::B(A)+K(E),XS(a)
- P(b);CHECK,XB(B)::B(A)+K(E),XQ(b)
- P(b);XB(B)::B(A)+K(E),XS(b)
- P(b);XB(B)::B(A)+K(E),XB(b)
- P(b);CHECK,XB(B)::B(A)+K(E),XR(b)
- P(d);::B(A)+K(E),XP(b)
- P(e);CHECK,P_PINP(G),XP(F)::B(A)+K(E),XP(e)
- Tries
- Try
- R(D);CHECK,XQ(h)
- Refutation
- K(k);S_FLIGHT
- Try
- P(L);P_PINB(j)
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,XB(B)::B(A)+K(E),XQ(b)
- P(b);CHECK,XB(B)::B(A)+K(E),XR(b)
- P(e);CHECK,P_PINP(G),XP(F)::B(A)+K(E),XP(e)
- Refutation
- S(i);
- Try
- Actual
- R(K);P_PINB(j)
- Vars
- P(b);CHECK,XB(B)::B(A)+K(E),XQ(b)
- P(b);CHECK,XB(B)::B(A)+K(E),XR(b)
- P(e);CHECK,P_PINP(G),XP(F)::B(A)+K(E),XP(e)
- K(k);N_SPINB(j),N_SPINQ(h),S_FLIGHT::PXB(j)=Q
- Q(h);N_SPINQ(h),XR(D)::B(A)+K(E),XS(a)
- S(a);XP(G)::B(A)+K(E),XS(a)
- S(i);N_GUARD,XP(I)::PXB(j)=Q
- P(b);XB(B)::B(A)+K(E),XS(b)
- P(b);XB(B)::B(A)+K(E),XB(b)
- Q(h);::B(A)+K(E),XS(a)
- R(f);OGATE::QAB(J)
- S(a);::B(A)+K(E),XS(a)
- P(d);::B(A)+K(E),XP(b)
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).