MESON Chess Problem Database
Problem Display
PID: 93302 (8/3n4/3Bn2N/1p3R2/1Np1k1p1/3pPp2/1p1P4/1K1Q1B2 w - - 0 1)
Watson, Charles Gilbert Marriott
Arbejder-Skak, 1958
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Bxd3#
- 1...g3
- 2.Qxf3#
- 1...Sd4
- Tries
- 1.Kxb2?
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...g3
- 2.Qxf3#
- 1...c3+!
- 1...Sd4
- 1.Sa2?
- threat
- 2.Sc3#
- 1...c3
- 2.Sxc3#
- 1...b4!
- threat
- 1.Sxd3?
- threat
- 2.Sf2#
- 1...Se5
- 2.Rxe5#
- 1...f2
- 2.Sxf2#
- 1...g3
- 2.Qxf3#
- 1...cxd3!
- threat
- 1.Sd5?
- threat
- 2.Sc3#
- 1...c3
- 2.Sxc3#
- 1...b4!
- threat
- 1.Sxg4?
- threat
- 2.Qxf3#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 1...Se5
- 2.Rxe5#
- 1...f2
- 2.Qf3#
- 1...Kxf5!
- threat
- 1.Bh3?
- 1...gxh3
- 2.Qxf3#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 2.Qh1#
- 1...g3
- 2.Qxf3#
- 1...c3!
- 1...gxh3
- 1.Bc7?
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Bxd3#
- 1...g3
- 2.Qxf3#
- 1...Sxc7!
- 1...Sd4
- 1.Rd5?
- 1...Sd4
- 2.Rxd4#
- 1...Sf4
- 2.Rd4#
- 1...Sec5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sef8
- 2.Rd4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Bxd3#
- 1...g3!
- 1...Sd4
- 1.Qe2?
- 1...fxe2
- 2.Bg2#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Qxd3#
- 1...g3
- 2.Qxf3#
- 1...dxe2!
- 1...fxe2
- 1.Qb3?
- 1...cxb3
- 2.Bxd3#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Bxd3#
- 2.Qd5#
- 1...g3!
- 1...cxb3
- 1.Qa4?
- threat
- 2.Qa8#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...bxa4!
- threat
- 1.Qe1?
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Bg2#
- 1...c3
- 2.Bxd3#
- 1...g3!
- 1...Sd4
- 1.Kxb2?
- Keys
- 1.Be2!
- 1...dxe2
- 2.Qc2#
- 1...fxe2
- 2.Qh1#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sec5
- 2.Rf4#
- 1...Sg5
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...Sd8
- 2.Rf4#
- 1...Sef8
- 2.Rf4#
- 1...Sdc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sdf8
- 2.Re5#
- 1...f2
- 2.Qh1#
- 1...c3
- 2.Bxd3#
- 1...g3
- 2.Bxf3#
- 1...dxe2
- 1.Be2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(d);N_GUARD::B(C),XP(b)
- P(f);N_GUARD::QAB1(B),XP(c)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(f);N_GUARD::QAB1(B),XP(c)
- Refutation
- P(d);CHECK
- Try
- S(F);
- Threat
- S(F)
- Vars
- P(d);::S(F),XP(d)
- Refutation
- P(g);
- Try
- S(F);XP(b)
- Threat
- S(F)
- Vars
- S(i);N_GUARD::R1(G),XS(i)
- P(c);::S(F),XP(c)
- P(f);N_GUARD::QAB1(B),XP(c)
- Refutation
- P(d);XS(F)
- Try
- S(F);
- Threat
- S(F)
- Vars
- P(d);::S(F),XP(d)
- Refutation
- P(g);
- Try
- S(I);XP(f)
- Threat
- QAB1(B),XP(c)
- Vars
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);::QAB1(B)
- Refutation
- K(e);S_FLIGHT,XR(G)
- Try
- B(C);
- Vars
- P(f);N_GUARD,XB(C)::QAB1(B),XP(c)
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(f);N_GUARD::QAB1(B),XP(c)
- Refutation
- P(d);
- Try
- B(H);
- Vars
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(d);N_GUARD::B(C),XP(b)
- P(f);N_GUARD::QAB1(B),XP(c)
- Refutation
- S(h);XB(H)
- Try
- R(G);
- Vars
- S(h);N_GUARD::R1(G),XS(h)
- S(h);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(d);N_GUARD::B(C),XP(b)
- Refutation
- P(f);
- Try
- Q(B);
- Vars
- P(c);OGATEB,XQ(B)::B(C)
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(d);N_GUARD::QAB1(B),XP(b)
- P(f);N_GUARD::QAB1(B),XP(c)
- Refutation
- P(b);XQ(B)
- Try
- Q(B);
- Vars
- P(d);N_GUARD,XQ(B)::B(C),XP(b)
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- Refutation
- P(f);
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- Refutation
- P(g);XQ(B)
- Try
- Q(B);
- Vars
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::B(C)
- P(d);N_GUARD::B(C),XP(b)
- Refutation
- P(f);
- Try
- Actual
- B(C);
- Vars
- P(b);OGATEB,XB(C)::QAB(B)
- P(c);OGATEB,XB(C)::QAB(B)
- S(h);N_GUARD::R1(G)
- S(h);N_GUARD::R1(G),XS(h)
- S(i);N_GUARD::R1(G)
- S(i);N_GUARD::R1(G),XS(i)
- P(c);OGATEB::QAB(B)
- P(d);N_GUARD::B(C),XP(b)
- P(f);N_GUARD::B(C),XP(c)
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).