MESON Chess Problem Database
Problem Display
PID: 208915 (8/1p6/1P2Bp1n/2B2p1Q/1p4pK/3k1PP1/N1N4R/1r6 w - - 0 1)
Bernard, Henry D'Oyly
The Observer, 1920
(First published on Sun Jan 11 1920)
#2
10 + 8
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Scxb4#
- 1...Rc1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rh1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...gxf3
- 2.Qxf3#
- 1...f4
- 2.Qd5#
- 1...Ra1
- Tries
- 1.Sc1+?
- 1...Kc3
- 2.Bd4#
- 1...Rxc1!
- 1...Kc3
- 1.Saxb4+?
- 1...Kc3
- 2.Bd4#
- 1...Rxb4!
- 1...Kc3
- 1.Bg1?
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...f4
- 2.Qb5#
- 2.Qd5#
- 1...Rxg1!
- 1...gxf3
- 1.Bb3?
- threat
- 2.Scxb4#
- 1...gxf3
- 2.Qxf3#
- 1...Rxb3!
- threat
- 1.Bd5?
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rh1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...f4!
- 1...gxf3
- 1.Bf7?
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rh1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...f4
- 2.Qd5#
- 1...Sxf7!
- 1...gxf3
- 1.Rf2?
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...f4
- 2.Qd5#
- 1...Rh1+!
- 1...gxf3
- 1.Rg2?
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...f4
- 2.Qd5#
- 1...Rh1+!
- 1...gxf3
- 1.Qg6?
- 1...Rc1
- 2.Scxb4#
- 1...Ra1
- 2.Scxb4#
- 1...Rd1
- 2.Scxb4#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 1...Rf1
- 2.Scxb4#
- 1...Rg1
- 2.Scxb4#
- 1...Rh1
- 2.Scxb4#
- 1...Rb2
- 2.Se1#
- 1...Rb3
- 2.Se1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Scb4#
- 1...gxf3!
- 1...Rc1
- 1.Qe8?
- threat
- 2.Qb5#
- 2.Qd7#
- 2.Qd8#
- 1...Sf7
- 2.Qb5#
- 1...gxf3!
- threat
- 1.Qg5?
- threat
- 2.Rd2#
- 2.Qd2#
- 2.Qe3#
- 1...gxf3
- 2.Qe3#
- 1...Rd1
- 2.Scxb4#
- 2.Qe3#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 2.Rd2#
- 2.Qd2#
- 1...Rh1
- 2.Scxb4#
- 2.Qd2#
- 2.Qe3#
- 1...f4
- 2.Qd5#
- 1...fxg5+!
- threat
- 1.Qxh6?
- threat
- 2.Rd2#
- 2.Qd2#
- 2.Qe3#
- 1...gxf3
- 2.Qe3#
- 1...Rd1
- 2.Scxb4#
- 2.Qe3#
- 1...Re1
- 2.Sxe1#
- 2.Scxb4#
- 2.Rd2#
- 2.Qd2#
- 1...Rh1
- 2.Scxb4#
- 2.Qd2#
- 2.Qe3#
- 1...f4!
- threat
- 1.Sc1+?
- Keys
- 1.Bd4!
- 1...gxf3
- 2.Qxf3#
- 1...Rc1
- 2.Sxc1#
- 2.Saxb4#
- 1...Ra1
- 2.Saxb4#
- 1...Rd1
- 2.Saxb4#
- 1...Re1
- 2.Saxb4#
- 1...Rf1
- 2.Saxb4#
- 1...Rg1
- 2.Saxb4#
- 1...Rh1
- 2.Saxb4#
- 1...Rb2
- 2.Sc1#
- 1...Rb3
- 2.Sc1#
- 1...Sf7
- 2.Qxf5#
- 1...Sg8
- 2.Qxf5#
- 1...b3
- 2.Sab4#
- 1...f4
- 2.Qb5#
- 1...gxf3
- 1.Bd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD,P_PINR(C)::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- P(e);OGATE::QAR2(H)
- Tries
- Try
- S(A);CHECK
- Vars
- K(b);P-FLIGHT::B(G)
- Refutation
- R(a);XS(A)
- Try
- S(A);CHECK,XP(c)
- Vars
- K(b);P-FLIGHT::B(G)
- Refutation
- R(a);XS(A)
- Try
- B(G);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- Refutation
- R(a);XB(G)
- Try
- B(J);
- Threat
- S(B),XP(c)
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- Refutation
- R(a);XB(J)
- Try
- B(J);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD,P_PINR(C)::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD,P_PINR(C)::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- P(e);OGATE::QAR2(H)
- Refutation
- S(g);XB(J)
- Try
- R(C);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- P(e);OGATE::QAR2(H)
- Refutation
- R(a);CHECK
- Try
- R(C);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- P(e);OGATE::QAR2(H)
- Refutation
- R(a);CHECK
- Try
- Q(H);P_PINP(e)
- Vars
- R(a);N_GUARD::S(B),XP(c)
- R(a);N_GUARD,P_PINR(C)::S(B),XP(c)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(B)
- Refutation
- P(d);XP(D)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- S(g);::QAB(H)
- Refutation
- P(d);XP(D)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- P(d);XP(D)::QAR1(H)
- P(e);OGATE::QAR2(H)
- Refutation
- P(f);CHECK,XQ(H)
- Try
- Q(H);XS(g)
- Threat
- DUALS(3)
- Vars
- P(d);XP(D)::QAR1(H)
- Refutation
- P(e);
- Try
- Actual
- B(G);
- Vars
- P(d);OGATE,XP(D)::QAR2(H),XP(d)
- R(a);N_GUARD::S(A),XP(c)
- R(a);N_GUARD,P_PINR(C)::S(A),XP(c)
- R(a);N_GUARD::S(A)
- S(g);N_GUARD::QAB(H),XP(e)
- P(c);S_CUTR(a)::S(A)
- P(e);OGATE::QAB(H)
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).