MESON Chess Problem Database
Problem Display
PID: 30769 (4r3/p2RpR2/K7/4kPQ1/1p2p3/1pn5/1B2n3/8 w - - 0 1)
Waterhouse, Albert F
Manchester Weekly Times, 1909
#2
6 + 9
| 15 | British Chess Magazine | 1910 |
| 2638 | White to Play | 1913 |
| 56 | The Problemist | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Rfxe7#
- 1...Rb8
- 2.Rfxe7#
- 1...Rc8
- 2.Rfxe7#
- 1...Rd8
- 2.Rfxe7#
- 1...Rf8
- 2.Rfxe7#
- 1...Rg8
- 2.Rfxe7#
- 1...Rh8
- 2.Rfxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sf4
- 2.Qg7#
- 1...e3
- 2.Qxe3#
- 1...e6
- 2.f6#
- 1...Ra8
- Tries
- 1.Ka5?
- 1...e3
- 2.Qxe3#
- 1...Ra8
- 2.Rfxe7#
- 1...Rb8
- 2.Rfxe7#
- 1...Rc8
- 2.Rfxe7#
- 1...Rd8
- 2.Rfxe7#
- 1...Rf8
- 2.Rfxe7#
- 1...Rg8
- 2.Rfxe7#
- 1...Rh8
- 2.Rfxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...a6!
- 1...e3
- 1.Kxa7?
- 1...e3
- 2.Qxe3#
- 1...Rb8
- 2.Rfxe7#
- 1...Rc8
- 2.Rfxe7#
- 1...Rd8
- 2.Rfxe7#
- 1...Rf8
- 2.Rfxe7#
- 1...Rg8
- 2.Rfxe7#
- 1...Rh8
- 2.Rfxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...Ra8+!
- 1...e3
- 1.Ba1?
- 1...e3
- 2.Qxe3#
- 1...Ra8
- 2.Rfxe7#
- 1...Rb8
- 2.Rfxe7#
- 1...Rc8
- 2.Rfxe7#
- 1...Rd8
- 2.Rfxe7#
- 1...Rf8
- 2.Rfxe7#
- 1...Rg8
- 2.Rfxe7#
- 1...Rh8
- 2.Rfxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...b2!
- 1...e3
- 1.Bxc3+?
- 1...Sxc3
- 2.Qg3#
- 1...Sd4
- 2.Bxd4#
- 2.Qg3#
- 1...bxc3!
- 1...Sxc3
- 1.Rd1?
- 1...e3
- 2.Qxe3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...Sd4!
- 1...e3
- 1.Rd2?
- 1...e3
- 2.Qxe3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...Sd4!
- 1...e3
- 1.Rd8?
- 1...e3
- 2.Qxe3#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...Sc1
- 2.Qg3#
- 1...Sg1
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sf4
- 2.Qg7#
- 1...e6
- 2.f6#
- 1...Rxd8!
- 1...e3
- 1.Qg3+?
- 1...Sf4
- 2.Qg7#
- 1...Sxg3!
- 1...Sf4
- 1.Ka5?
- Keys
- 1.Qd2!
- threat
- 2.Rd5#
- 1...e3
- 2.Qxe3#
- 1...Rd8
- 2.Rdxe7#
- 1...Sd4
- 2.Qh2#
- 1...Sf4
- 2.Qd4#
- 1...e6
- 2.Qd6#
- threat
- 1.Qd2!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,N_SPINS(c)::QAB(C)
- S(a);SBLOCK::QAB(C)
- P(e);OGATEB::QAR2(C),XP(e)
- P(h);SBLOCK::QAR(C)+P(B)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,N_SPINS(c)::QAB(C)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- P(g);
- Try
- K(D);P-FLIGHT,XP(g)
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,N_SPINS(c)::QAB(C)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- R(i);CHECK
- Try
- B(A);
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,N_SPINS(c)::QAB(C)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- P(b);N_SPINS(c)
- Try
- B(A);CHECK,XS(c)
- Vars
- S(a);XB(A)::QAB(C)
- Refutation
- P(d);XB(A)
- Try
- R(E);
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- S(a);N_SPINS(c)
- Try
- R(E);
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- S(a);N_SPINS(c)
- Try
- R(E);
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(F),XP(h)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,N_SPINS(c)::QAB(C)
- S(a);SBLOCK::QAB(C)
- P(h);SBLOCK::QAR(C)+P(B)
- Refutation
- R(i);XR(E)
- Try
- Q(C);CHECK
- Vars
- S(a);SBLOCK::QAB(C)
- Refutation
- S(a);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- R1(E)
- Vars
- P(e);OGATEB::QAR2(C),XP(e)
- R(i);N_GUARD::R(E),XP(h)
- S(a);N_SPINS(c),OGATE::QAB(C)
- S(a);N_GUARD,SBLOCK::QAB1(C)
- P(h);N_GUARD::QAB1(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).