MESON Chess Problem Database
Problem Display
PID: 3068 (8/K3p3/2Q1P1p1/2n2rp1/p1P2pN1/P2k1N2/1PR1R3/3r3n w - - 0 1)
Bernard, Henry D'Oyly
British Chess Magazine, 1918
#2
10 + 10
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd2
- 2.Rexd2#
- 1...Rd5
- 2.Qxd5#
- 1...Re5
- 2.Sgxe5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sxe6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Ra1
- Tries
- 1.Kb6?
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Re5
- 2.Sgxe5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7+!
- 1...Sxe6
- 1.Ka8?
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Re5
- 2.Sgxe5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Rf8+!
- 1...Sxe6
- 1.Se1+?
- 1...Rxe1
- 2.Red2#
- 1...Kd4!
- 1...Rxe1
- 1.Sfe5+?
- 1...Kd4
- 2.Qd5#
- 1...Rxe5!
- 1...Kd4
- 1.Qb7?
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Re5
- 2.Sgxe5#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sxb7!
- 1...Sxe6
- 1.Qd7+?
- 1...Rd5
- 2.Sge5#
- 2.Qxd5#
- 1...Sxd7!
- 1...Rd5
- 1.Qa8?
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Re5
- 2.Sgxe5#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sb7!
- 1...Sxe6
- 1.Qxc5?
- threat
- 2.Qd4#
- 1...Rd2
- 2.Rcxd2#
- 1...Rd5
- 2.Qxd5#
- 1...Rxc5!
- threat
- 1.Qd6+?
- 1...Rd5
- 2.Sge5#
- 2.Qxd5#
- 1...exd6!
- 1...Rd5
- 1.b3?
- 1...Sxb3
- 2.Qe4#
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Re5
- 2.Sgxe5#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...axb3!
- 1...Sxb3
- 1.b4?
- 1...Sxe6
- 2.Qe4#
- 1...Rd2
- 2.Rexd2#
- 1...Re5
- 2.Sgxe5#
- 1...Ra1
- 2.Red2#
- 1...Rb1
- 2.Red2#
- 1...Rc1
- 2.Red2#
- 1...Re1
- 2.Red2#
- 1...Rf1
- 2.Red2#
- 1...Rg1
- 2.Red2#
- 1...Rd5
- 2.Qxd5#
- 1...Rf6
- 2.Sge5#
- 2.Qd5#
- 1...Rf7
- 2.Sge5#
- 2.Qd5#
- 1...Rf8
- 2.Sge5#
- 2.Qd5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...axb4 ep!
- 1...Sxe6
- 1.Kb6?
- Keys
- 1.Qb5!
- 1...Sxe6
- 2.c5#
- 1...Rd2
- 2.Rcxd2#
- 1...Re5
- 2.Sgxe5#
- 1...Ra1
- 2.Rcd2#
- 1...Rb1
- 2.Rcd2#
- 1...Rc1
- 2.Rcd2#
- 1...Re1
- 2.Rcd2#
- 1...Rf1
- 2.Rcd2#
- 1...Rg1
- 2.Rcd2#
- 1...Rd5
- 2.cxd5#
- 1...Rf6
- 2.Sge5#
- 1...Rf7
- 2.Sge5#
- 1...Rf8
- 2.Sge5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sf2#
- 1...Sb3
- 2.c5#
- 1...Se4
- 2.c5#
- 1...Sa6
- 2.c5#
- 1...Sb7
- 2.c5#
- 1...Sd7
- 2.c5#
- 1...Sxe6
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- R(g);N_GUARD::QAR2(H),XR(g)
- R(g);N_GUARD::S(G),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- S(f);N_GUARD,XP(I)::QAB1(H)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINP(A)::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- R(g);N_GUARD::S(G),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- Refutation
- S(f);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- R(g);N_GUARD::S(G),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- Refutation
- R(g);CHECK
- Try
- S(E);CHECK
- Vars
- R(a);XS(E)::R1(C)
- Refutation
- K(c);P-FLIGHT
- Try
- S(E);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(H)
- Refutation
- R(g);XS(E)
- Try
- Q(H);
- Vars
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(g);N_GUARD::S(G),XR(g)
- R(a);N_GUARD::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- Refutation
- S(f);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- S(f);XQ(H)
- Try
- Q(H);
- Vars
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(g);N_GUARD::S(G),XR(g)
- R(a);N_GUARD::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- Refutation
- S(f);
- Try
- Q(H);XS(f)
- Threat
- QAR1(H)
- Vars
- R(a);N_GUARD::R1(B),XR(a)
- R(g);N_GUARD::QAR2(H),XR(g)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- P(j);XQ(H)
- Try
- P(A);
- Vars
- S(f);N_GUARD,XP(A)::QAB1(H)
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(g);N_GUARD::S(G),XR(g)
- R(a);N_GUARD::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H),XS(f)
- S(f);N_GUARD::QAB1(H)
- Refutation
- P(d);XP(A)
- Try
- P(A);
- Vars
- S(f);N_GUARD,XP(I)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(g);N_GUARD::S(G),XR(g)
- R(a);N_GUARD::R1(C)
- R(g);N_GUARD::QAR2(H),XR(g)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);N_GUARD::QAB1(H)
- S(f);N_GUARD::QAB1(H),XS(f)
- Refutation
- P(d);EP,XP(A)
- Try
- Actual
- Q(H);
- Vars
- S(f);OGATE,XP(I)::QAB(H)+P(F)
- R(a);N_GUARD::R1(B),XR(a)
- R(g);N_GUARD::S(G),XR(g)
- R(a);N_GUARD::R1(B)
- R(g);OGATE::QAB(H)+P(F),XR(g)
- R(g);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- S(b);N_GUARD::S(G)
- S(f);OGATE::QAB(H)+P(F)
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).