MESON Chess Problem Database
Problem Display
PID: 143670 (n2B4/4R3/Kpk1p1n1/p1rq1N2/8/3N4/3Q4/2R4B w - - 0 1)
Conn, W
British Chess Magazine, 1896
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Rxc1
- 2.Qxc1#
- 1...Rc2
- 2.Rxc2#
- 2.Qxc2#
- 1...Rc3
- 2.Rxc3#
- 2.Qxc3#
- 1...Rc4
- 2.Rxc4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sxe7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...Sc7+
- 2.Rxc7#
- 1...a4
- 2.Sb4#
- 1...b5
- 2.Rxc5#
- 1...Qg2
- Tries
- 1.Bxd5+?
- 1...Kxd5
- 2.Qg2#
- 1...exd5!
- 1...Kxd5
- 1.Bxb6?
- threat
- 2.Rxc5#
- 1...Sc7+
- 2.Rxc7#
- 1...Rxc1
- 2.Qxc1#
- 1...Sxe7
- 2.Se5#
- 1...Rc2
- 2.Rxc2#
- 2.Qxc2#
- 1...Rc3
- 2.Rxc3#
- 2.Qxc3#
- 1...Rc4
- 2.Rxc4#
- 1...exf5!
- threat
- 1.Qe1?
- threat
- 2.Qxe6#
- 1...Sc7+
- 2.Rxc7#
- 1...exf5
- 2.Qe6#
- 1...Qe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...e5!
- threat
- 1.Qe3?
- threat
- 2.Qxe6#
- 1...Sc7+
- 2.Rxc7#
- 1...exf5
- 2.Qe6#
- 1...Qe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...e5!
- threat
- 1.Qxa5?
- threat
- 2.Sb4#
- 2.Qb5#
- 1...Sc7+
- 2.Rxc7#
- 1...Qxh1
- 2.Sb4#
- 1...Sxe7
- 2.Se5#
- 2.Qb5#
- 1...bxa5
- 2.Rxc5#
- 1...Qg2
- 2.Sb4#
- 2.Bxg2#
- 1...Qf3
- 2.Sb4#
- 2.Bxf3#
- 1...Qe4
- 2.Sb4#
- 2.Bxe4#
- 1...b5
- 2.Sb4#
- 2.Rxc5#
- 2.Qxb5#
- 1...exf5!
- threat
- 1.Qg5?
- 1...Sc7+
- 2.Rxc7#
- 1...Rxc1
- 2.Qxc1#
- 1...Sxe7
- 2.Se5#
- 1...exf5
- 2.Qf6#
- 2.Qxg6#
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...e5
- 2.Qf6#
- 2.Qxg6#
- 1...Rc2
- 2.Rxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc4
- 2.Rxc4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...a4
- 2.Sb4#
- 1...b5
- 2.Rxc5#
- 1...Qxh1!
- 1...Sc7+
- 1.Qa2?
- 1...Sc7+
- 2.Rxc7#
- 1...Qxh1
- 2.Qxe6#
- 1...Sxe7
- 2.Se5#
- 1...exf5
- 2.Qxd5#
- 1...e5
- 2.Bxd5#
- 2.Qxd5#
- 1...Qg2
- 2.Bxg2#
- 2.Qxe6#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 2.Qxe6#
- 1...Qe4
- 2.Bxe4#
- 2.Qxe6#
- 1...Rc2
- 2.Rxc2#
- 2.Qxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc4
- 2.Rxc4#
- 2.Qxc4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...a4
- 2.Sb4#
- 1...b5
- 2.Rxc5#
- 1...Rxc1!
- 1...Sc7+
- 1.Qb2?
- threat
- 2.Qb5#
- 1...Sc7+
- 2.Rxc7#
- 1...exf5
- 2.Qf6#
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...b5
- 2.Rxc5#
- 2.Qxb5#
- 1...Qxh1!
- threat
- 1.Qe2?
- threat
- 2.Qxe6#
- 1...Sc7+
- 2.Rxc7#
- 1...exf5
- 2.Qe6#
- 1...Qe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...e5!
- threat
- 1.Qg2?
- 1...Sc7+
- 2.Rxc7#
- 1...Qxg2
- 2.Bxg2#
- 1...Sxe7
- 2.Se5#
- 1...exf5
- 2.Qxd5#
- 2.Qxg6#
- 1...Qf3
- 2.Qxf3#
- 1...Qe4
- 2.Qxe4#
- 1...e5
- 2.Qxd5#
- 2.Qxg6#
- 1...Rc2
- 2.Rxc2#
- 2.Qxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc4
- 2.Rxc4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...a4
- 2.Sb4#
- 1...b5
- 2.Rxc5#
- 1...Rxc1!
- 1...Sc7+
- 1.Bxd5+?
- Keys
- 1.Qh6!
- 1...Sc7+
- 2.Rxc7#
- 1...Qxh1
- 2.Qxh1#
- 1...Rxc1
- 2.Qxc1#
- 1...Sxe7
- 2.Se5#
- 2.Qxe6#
- 1...exf5
- 2.Qxg6#
- 1...Qg2
- 2.Bxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...e5
- 2.Sxe5#
- 2.Qxg6#
- 1...Rc2
- 2.Rxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc4
- 2.Rxc4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 2.Qxe6#
- 1...Se5
- 2.Sxe5#
- 2.Qxe6#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 2.Qxe6#
- 1...a4
- 2.Sb4#
- 1...b5
- 2.Rxc5#
- 1...Sc7+
- 1.Qh6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(c);OGATEB::B(B),XQ(c)
- R(b);N_SPINR(b),OGATE,XR(A)::QAR(C),XR(b)
- R(b);OGATEB::R(A),XR(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD,XR(G)::S(D)
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- P(a);N_GUARD::S(D)
- P(d);N_GUARD::R1(A),XR(b)
- Tries
- Try
- B(B);CHECK,XQ(c)
- Vars
- K(e);N_SPINR(b),S_FLIGHT,XB(B)::QAB(C)
- Refutation
- P(f);XB(B)
- Try
- B(H);XP(d)
- Threat
- R1(A),XR(b)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- R(b);N_SPINR(b),OGATE,XR(A)::QAR(C),XR(b)
- S(g);N_GUARD,XR(G)::S(D)
- R(b);OGATEB::R(A),XR(b)
- Refutation
- P(f);XS(E)
- Try
- Q(C);
- Threat
- QAR2(C),XP(f)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- P(f);XS(E)::QAR2(C)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- Refutation
- P(f);
- Try
- Q(C);
- Threat
- QAR2(C),XP(f)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- P(f);XS(E)::QAR2(C)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- Refutation
- P(f);
- Try
- Q(C);XP(a)
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- Q(c);N_SPINQ(c),XB(B)::S(D)
- P(d);N_GUARD,XQ(C)::R1(A),XR(b)
- Refutation
- P(f);XS(E)
- Try
- Q(C);
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- R(b);N_SPINR(b),OGATE,XR(A)::QAR(C),XR(b)
- S(g);N_GUARD,XR(G)::S(D)
- Q(c);OGATEB::B(B),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- P(a);N_GUARD::S(D)
- P(d);N_GUARD::R1(A),XR(b)
- Refutation
- Q(c);N_SPINQ(c),XB(B)
- Try
- Q(C);
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- Q(c);N_SPINQ(c),OGATE,XB(B)::QAR2(C),XP(f)
- S(g);N_GUARD,XR(G)::S(D)
- P(f);N_GUARD,XS(E)::QAB1(C),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- P(a);N_GUARD::S(D)
- P(d);N_GUARD::R1(A),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- P(f);OGATEB,XS(E)::QAR(C)
- Q(c);OGATEB::B(B),XQ(c)
- Refutation
- Q(c);N_SPINQ(c),XB(B)
- Try
- Q(C);
- Threat
- QAR2(C),XP(f)
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- P(f);XS(E)::QAR2(C)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- Refutation
- P(f);
- Try
- Q(C);
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- Q(c);OGATE,XQ(C)::B(B),XQ(c)
- S(g);N_GUARD,XR(G)::S(D)
- Q(c);OGATEB::QAB(C),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- P(a);N_GUARD::S(D)
- P(d);N_GUARD::R1(A),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Actual
- Q(C);
- Vars
- S(h);CHECK,N_GUARD::R1(G),XS(h)
- Q(c);N_SPINQ(c),OGATE,XB(B)::QAB(C),XQ(c)
- R(b);N_SPINR(b),OGATE,XR(A)::QAR(C),XR(b)
- P(f);OGATEB,P_SPINS(g),XS(E)::QAR(C),XS(g)
- Q(c);OGATEB::B(B),XQ(c)
- R(b);OGATEB::R(A),XR(b)
- S(g);N_GUARD,P_SPINP(f)::S(D)
- P(a);N_GUARD::S(D)
- P(d);N_GUARD::R1(A),XR(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).