MESON Chess Problem Database
Problem Display
PID: 184949 (3RB3/n3p2b/1p2P1pN/bpP1p1P1/NP2kp2/4r3/5KP1/1nR1Q3 w - - 0 1)
Bernard, Henry D'Oyly
British Chess Magazine, 1917
#2
12 + 12
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.Rxe1#
- 1...Re2+
- 2.Qxe2#
- 1...Bxb4
- 2.Qxb4#
- 1...Bg8
- 2.Bxg6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...f3
- 2.Qxe3#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...Rxe1
- Tries
- 1.Kf1?
- 1...Rxe1+
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...Re2
- 2.Qxe2#
- 1...f3
- 2.Qh4#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sd2+!
- 1...Rxe1+
- 1.Bxb5?
- threat
- 2.Bd3#
- 2.Rc4#
- 1...Re2+
- 2.Qxe2#
- 1...f3
- 2.Rc4#
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 2.Bd3#
- 1...Sa3
- 2.Sc3#
- 2.Bd3#
- 1...Sc3
- 2.Sxc3#
- 2.Bd3#
- 1...Sc6
- 2.Bd3#
- 2.Bxc6#
- 1...Sxb5!
- threat
- 1.Rxb1?
- threat
- 2.Sc3#
- 1...Re2+
- 2.Qxe2#
- 1...Bxb4
- 2.Rxb4#
- 2.Qxb4#
- 1...f3
- 2.Qxe3#
- 1...bxa4!
- threat
- 1.Rcd1?
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxc5
- 2.Sxc5#
- 1...f3
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...bxa4!
- 1...Re2+
- 1.Rc2?
- 1...Re2+
- 2.Rxe2#
- 2.Qxe2#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...f3
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Rxe1!
- 1...Re2+
- 1.Rd6?
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...f3
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...exd6!
- 1...Re2+
- 1.g3?
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...f3
- 2.Qxe3#
- 1...fxg3+!
- 1...Re2+
- 1.g4?
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...f3
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...fxg4 ep+!
- 1...Re2+
- 1.bxa5?
- threat
- 2.Qb4#
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...bxc5
- 2.Sxc5#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...b4
- 2.Rc4#
- 2.Qxb4#
- 1...bxa5!
- threat
- 1.cxb6?
- threat
- 2.Sc5#
- 1...Re2+
- 2.Qxe2#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...f3
- 2.Qxe3#
- 1...Bxb6!
- threat
- 1.c6?
- 1...Re2+
- 2.Qxe2#
- 1...Rxe1
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxc6
- 2.Bxc6#
- 1...bxa4
- 2.Rc4#
- 1...f3
- 2.Qxe3#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Bxg6#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc8!
- 1...Re2+
- 1.Kf1?
- Keys
- 1.Kg1!
- 1...Rxe1+
- 2.Rxe1#
- 1...Bxb4
- 2.Qxb4#
- 1...bxa4
- 2.Rc4#
- 1...bxc5
- 2.Sxc5#
- 1...Re2
- 2.Qxe2#
- 1...f3
- 2.Qh4#
- 1...Bg8
- 2.Bxg6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Rxe1+
- 1.Kg1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- P(d);N_GUARD::QAR1(B),XR(b)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- R(b);OGATEB::QAR2(B),XR(b)
- P(d);OGATEB::QAR(B)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- Refutation
- S(a);CHECK
- Try
- B(L);XP(f)
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- Refutation
- S(j);XB(L)
- Try
- R(A);XS(a)
- Threat
- S(E)
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- P(d);N_GUARD::QAR1(B),XR(b)
- Refutation
- P(f);XS(E)
- Try
- R(A);
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(h);XP(G)::S(E),XP(h)
- P(d);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- Refutation
- P(f);XS(E)
- Try
- R(A);
- Vars
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- P(d);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- Refutation
- R(b);N_SPINR(b),XQ(B)
- Try
- R(K);
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- P(d);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- Refutation
- P(k);XR(K)
- Try
- P(D);
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- P(d);N_GUARD::QAR1(B),XR(b)
- Refutation
- P(d);CHECK,XP(D)
- Try
- P(D);
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- P(d);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
- Refutation
- P(d);CHECK,EP,XP(D)
- Try
- P(F);XB(e)
- Threat
- QAR(B)
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- P(h);XP(G)::S(E),XP(h)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- Refutation
- P(h);XP(F)
- Try
- P(G);XP(h)
- Threat
- S(E)
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(d);N_GUARD::QAR1(B),XR(b)
- Refutation
- B(e);XP(G)
- Try
- P(G);
- Vars
- R(b);CHECK,OGATEB::QAR2(B),XR(b)
- R(b);N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- S(j);OGATE,XP(G)::B(L),XS(j)
- P(f);N_GUARD,XS(E)::R(A)
- P(d);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::S(E)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E),XS(a)
- Refutation
- S(j);
- Try
- Actual
- K(C);S_FLIGHT
- Vars
- R(b);CHECK,N_SPINR(b),OGATE,XQ(B)::R(A),XR(b)
- B(e);OGATE,XP(F)::QAR(B),XB(e)
- P(f);N_GUARD,XS(E)::R(A)
- P(h);XP(G)::S(E),XP(h)
- R(b);OGATEB::QAR2(B),XR(b)
- P(d);OGATEB::QAR(B)
- B(l);N_GUARD::B(L),XP(i)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(j);N_GUARD::B(L),XS(j)
- S(j);N_GUARD::B(L)
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).