MESON Chess Problem Database
Problem Display
PID: 187911 (6R1/5Q1N/2prn2K/2Pkr2n/1pR2p2/1B2pP2/p1P1P3/B2N4 w - - 0 1)
Wainwright, Joseph CJ
American Chess Bulletin, 1910
#2
12 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Rxd8#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Re4
- Tries
- 1.Kg6?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Rxd8#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5+!
- 1...Re4
- 1.Sb2?
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Rxd8#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Re4!
- 1...Rf5
- 1.Sf2?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Rxd8#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...exf2!
- 1...Re4
- 1.Bxa2?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Rxd8#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...b3!
- 1...Re4
- 1.Rg1?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rd8!
- 1...Re4
- 1.Rg2?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rd8!
- 1...Re4
- 1.Rg4?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rd8!
- 1...Re4
- 1.Rg5?
- threat
- 2.Rxe5#
- 1...Rf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rxg5!
- threat
- 1.Rg6?
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rd8!
- 1...Re4
- 1.Rg7?
- 1...Sxg7
- 2.Sf6#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Rd8!
- 1...Sxg7
- 1.Ra8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Rb8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Rc8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Rd8?
- threat
- 2.Rxd6#
- 1...Rd7
- 2.Rxd7#
- 2.Qxd7#
- 1...Rxd8!
- threat
- 1.Re8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Rf8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Rh8?
- 1...Rd8
- 2.Rxd8#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Qxf5#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Rg5!
- 1...Rd8
- 1.Qe7?
- threat
- 2.Qxd6#
- 1...Rd8
- 2.Rxb4#
- 2.Rd4#
- 2.Re4#
- 2.Rxf4#
- 1...Rd7
- 2.Rxb4#
- 2.Rd4#
- 2.Re4#
- 2.Rxf4#
- 2.Qxd7#
- 1...Sxc5+!
- threat
- 1.c3?
- 1...bxc3
- 2.Sxc3#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Rxg5#
- 1...Rd8
- 2.Rxd8#
- 1...Rd7
- 2.Qxd7#
- 1...Sg3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Re4!
- 1...bxc3
- 1.Kg6?
- Keys
- 1.Qf6!
- threat
- 2.Qxe5#
- 1...Sxf6
- 2.Sxf6#
- 1...Sxc5
- 2.Rd4#
- 1...Re4
- 2.fxe4#
- 1...Rf5
- 2.Rc3#
- 2.Qxf5#
- 1...Rg5
- 2.Rc3#
- 1...Sd4
- 2.Qxd6#
- 1...Sg5
- 2.Qxd6#
- 1...Sc7
- 2.Qxd6#
- 1...Seg7
- 2.Qxd6#
- 1...Sd8
- 2.Qxd6#
- 1...Sf8
- 2.Qxd6#
- threat
- 1.Qf6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- R(i);OGATEB::R(L),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- R(i);OGATEB::R(L),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);CHECK
- Try
- S(B);
- Vars
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- R(i);OGATEB::R(L),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- S(B);
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- R(i);OGATEB::R(L),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- P(b);XS(B)
- Try
- B(E);XP(a)
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- R(i);OGATEB::R(L),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- P(c);
- Try
- R(L);
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(i);
- Try
- R(L);
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(i);
- Try
- R(L);
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(i);
- Try
- R(L);P_PINR(f)
- Threat
- R1(L),XR(f)
- Refutation
- R(f);N_SPINR(f),XR(L)
- Try
- R(L);
- Vars
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(i);
- Try
- R(L);
- Vars
- S(g);N_GUARD,XR(L)::S(K)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(i);
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- R(L);P_PINR(i)
- Threat
- R1(L),XR(i)
- Refutation
- R(i);N_SPINR(i),XR(L)
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- R(L);
- Vars
- R(i);OGATEB::R(L),XR(i)
- R(f);OGATE::P(F),XR(f)
- R(f);OGATEB::QAR2(J),XR(f)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- Q(J);N_PINS(j)
- Threat
- QAR1(J),XR(i)
- Refutation
- S(j);CHECK,XP(H)
- Try
- P(C);
- Vars
- P(c);XP(C)::S(B),XP(c)
- R(f);OGATEB::QAR2(J),XR(f)
- R(f);OGATEB::R(L),XR(f)
- R(i);OGATEB::R(L),XR(i)
- R(i);OGATEB::QAR2(J),XR(i)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- Refutation
- R(f);
- Try
- Actual
- Q(J);N_PINS(j)
- Threat
- QAR1(J),XR(f)
- Vars
- S(g);XQ(J)::S(K),XS(g)
- S(j);P_PINQ(J),SBLOCK,XP(H)::B(E)+R(G),DCHECK
- R(f);OGATE::P(F),XR(f)
- R(f);::B(E)+R(G)
- S(j);OGATE,P_PINQ(J)::QAR1(J),XR(i)
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).