MESON Chess Problem Database
Problem Display
PID: 2933 (8/2p2B2/1p4n1/1NnRPkr1/2Q4p/Kp4pP/1P2N1P1/8 w - - 0 1)
Bernard, Henry D'Oyly
Source?, 1912
#2
10 + 9
| 14907 | Good Companion Chess Problem Club | 1917 |
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd3#
- 1...Se4
- 2.Sbd4#
- 1...Sa6
- 2.Qd3#
- 1...Se6
- 2.Qd3#
- 1...Sb7
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf4
- 2.Qxf4#
- 1...Sxe5
- 2.Qf4#
- 1...Se7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- 1...c6
- 2.Sd6#
- 1...Rg4
- Tries
- 1.Kb4?
- 1...Sd3+
- 2.Qxd3#
- 1...Sxe5
- 2.Qf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Sa4
- 2.Qd3#
- 1...Se4
- 2.Sbd4#
- 1...Se6
- 2.Qd3#
- 1...Sb7
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf4
- 2.Qxf4#
- 1...Se7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- 1...c6
- 2.Sd6#
- 1...Sa6+!
- 1...Sd3+
- 1.Sxc7?
- 1...Sxe5
- 2.Qf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Sd3
- 2.Be6#
- 2.Qxd3#
- 1...Sa4
- 2.Be6#
- 2.Qd3#
- 1...Se4
- 2.Be6#
- 1...Sa6
- 2.Be6#
- 2.Qd3#
- 1...Se6
- 2.Bxe6#
- 2.Qd3#
- 1...Sb7
- 2.Be6#
- 2.Qd3#
- 1...Sd7
- 2.Be6#
- 2.Qd3#
- 1...Sf4
- 2.Qxf4#
- 1...Se7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- 1...b5!
- 1...Sxe5
- 1.Be6+?
- 1...Sxe6
- 2.Qd3#
- 1...Kxe6!
- 1...Sxe6
- 1.Rxc5?
- threat
- 2.Be6#
- 2.Qd3#
- 1...Sxe5
- 2.Qf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Sf4
- 2.Qxf4#
- 1...Se7
- 2.Qd3#
- 2.Qf4#
- 1...Sf8
- 2.Qd3#
- 2.Qf4#
- 1...Sh8
- 2.Qd3#
- 2.Qf4#
- 1...bxc5!
- threat
- 1.Qd3+?
- 1...Se4
- 2.Sbd4#
- 1...Sxd3!
- 1...Se4
- 1.Qc2+?
- 1...Sd3
- 2.Qxd3#
- 1...Se4
- 2.Sbd4#
- 1...bxc2!
- 1...Sd3
- 1.Qd4?
- 1...Sxe5
- 2.Qxe5#
- 2.Qf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Se6
- 2.Qd3#
- 1...Sb7
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf4
- 2.Qxf4#
- 1...Se7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 2.e6#
- 1...Sh8
- 2.Qf4#
- 2.e6#
- 1...c6
- 2.Sd6#
- 1...Se4!
- 1...Sxe5
- 1.Qe4+?
- 1...Sxe4
- 2.Sbd4#
- 1...Kxe4!
- 1...Sxe4
- 1.e6+?
- 1...Se5
- 2.Qf4#
- 1...Kf6!
- 1...Se5
- 1.Kb4?
- Keys
- 1.Sec3!
- 1...Sxe5
- 2.Qf1#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Se4
- 2.Qxe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sf4
- 2.Sd4#
- 1...Se7
- 2.Qf1#
- 1...Sf8
- 2.Qf1#
- 1...Sh8
- 2.Qf1#
- 1...c6
- 2.Sd6#
- 1...Sxe5
- 1.Sec3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD::QAB(F)
- S(d);SBLOCK::S(G)
- S(h);N_GUARD::QAR1(F),XS(h)
- S(h);N_GUARD,P_SPINS(h),XP(I)::QAR1(F)
- S(h);N_GUARD::QAR1(F)
- P(i);N_GUARD::S(G)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(h);N_GUARD,P_SPINS(h),XP(I)::QAR1(F)
- R(f);N_GUARD,P_PINQ(F)::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB(F)
- S(d);SBLOCK::S(G)
- S(h);N_GUARD::QAR1(F),XS(h)
- S(h);N_GUARD::QAR1(F)
- P(i);N_GUARD::S(G)
- Refutation
- S(d);CHECK
- Try
- S(G);XP(i)
- Vars
- S(h);N_GUARD,P_SPINS(h),XP(I)::QAR1(F)
- R(f);N_GUARD::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(d);N_GUARD::B(J)
- S(h);N_GUARD::QAR1(F),XS(h)
- S(h);N_GUARD::QAR1(F)
- Refutation
- P(g);
- Try
- B(J);CHECK
- Vars
- S(d);SBLOCK,XB(J)::QAB(F)
- Refutation
- K(e);S_FLIGHT,XB(J)
- Try
- R(H);XS(d)
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,P_SPINS(h),XP(I)::QAR1(F)
- R(f);N_GUARD::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(h);N_GUARD::QAR1(F),XS(h)
- Refutation
- P(g);XR(H)
- Try
- Q(F);CHECK
- Vars
- S(d);P_SPINS(d)::S(G)
- Refutation
- S(d);XQ(F)
- Try
- Q(F);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB(F),XS(d)
- S(d);P_SPINS(d)::S(G)
- Refutation
- P(a);XQ(F)
- Try
- Q(F);
- Vars
- R(f);N_GUARD::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD::QAB(F)
- S(h);N_GUARD::QAR1(F),XS(h)
- S(h);N_GUARD::QAR1(F)
- P(i);N_GUARD::S(G)
- Refutation
- S(d);
- Try
- Q(F);CHECK
- Vars
- S(d);SBLOCK,XQ(F)::S(G)
- Refutation
- K(e);S_FLIGHT,XQ(F)
- Try
- P(I);CHECK
- Vars
- S(h);P_SPINS(h)::QAR1(F)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(B);
- Vars
- S(h);N_GUARD,P_SPINS(h),XP(I)::QAR(F)
- R(f);N_GUARD::QAB1(F),XR(f)
- R(f);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- S(d);N_GUARD::QAB1(F)
- S(h);SBLOCK::S(G)
- S(h);N_GUARD::QAR(F)
- P(i);N_GUARD::S(G)
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).