MESON Chess Problem Database
Problem Display
PID: 198407 (8/4p3/1nQpK3/2p3N1/1P1kp2p/pB4nr/P2P3p/2N4R w - - 0 1)
Jerrard, Ernest Haslam Harvey
Brisbane Courier, 1920
#2
9 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Qxe4#
- 1...Sxh1
- 2.Qxe4#
- 1...Se2
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sa4
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e3
- 2.Sf3#
- 1...cxb4
- 2.Qxb6#
- 1...c4
- 2.Qxb6#
- 1...d5
- 2.Qxc5#
- 1...Sf1
- Tries
- 1.Se2+?
- 1...Sxe2
- 2.Qxe4#
- 1...Kd3!
- 1...Sxe2
- 1.Rxh2?
- 1...cxb4
- 2.Qxb6#
- 1...Sf1
- 2.Qxe4#
- 1...Sh1
- 2.Qxe4#
- 1...Se2
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sa4
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e3
- 2.Sf3#
- 1...c4
- 2.Qxb6#
- 1...d5
- 2.Qxc5#
- 1...Rxh2!
- 1...cxb4
- 1.Qb7?
- 1...Sxh1
- 2.Qxe4#
- 1...cxb4
- 2.Qxb6#
- 1...Sf1
- 2.Qxe4#
- 1...Se2
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sa4
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e3
- 2.Sf3#
- 1...c4
- 2.Qxb6#
- 1...d5!
- 1...Sxh1
- 1.Qxd6+?
- 1...Sd5
- 2.Qxc5#
- 2.Qe5#
- 2.Qxd5#
- 1...exd6!
- 1...Sd5
- 1.b5?
- 1...Sxh1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Se2
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sh5
- 2.Qxe4#
- 1...Sa4
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...e3
- 2.Sf3#
- 1...c4
- 2.Qxb6#
- 1...d5!
- 1...Sxh1
- 1.Se2+?
- Keys
- 1.Qb5!
- 1...Sxh1
- 2.Se2#
- 1...cxb4
- 2.Qxb6#
- 1...Sf1
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Sf5
- 2.Se2#
- 1...Sh5
- 2.Se2#
- 1...Sa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd5
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Sa8
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...e3
- 2.Qd3#
- 1...c4
- 2.Qxb6#
- 1...d5
- 2.Qxc5#
- 1...Sxh1
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::QAR1(H),XP(f)
- S(c);N_GUARD,XR(B)::QAR1(H),XP(f)
- S(i);N_GUARD::QAR1(H)
- S(i);N_GUARD::QAR1(H),XS(i)
- P(f);N_GUARD::S(G)
- P(h);OGATEB,XP(F)::QAB(H),XS(i)
- P(h);OGATEB::QAB(H),XS(i)
- P(j);N_GUARD::QAB1(H),XP(h)
- Tries
- Try
- S(A);CHECK
- Vars
- S(c);XS(A)::QAR1(H),XP(f)
- Refutation
- K(e);P-FLIGHT
- Try
- R(B);XP(a)
- Vars
- P(h);OGATEB,XP(F)::QAB(H),XS(i)
- S(c);N_GUARD::QAR1(H),XP(f)
- S(i);N_GUARD::QAR1(H)
- S(i);N_GUARD::QAR1(H),XS(i)
- P(f);N_GUARD::S(G)
- P(h);OGATEB::QAB(H),XS(i)
- P(j);N_GUARD::QAB1(H),XP(h)
- Refutation
- R(d);XR(B)
- Try
- Q(H);
- Vars
- S(c);N_GUARD,XR(B)::QAR1(H),XP(f)
- P(h);OGATEB,XP(F)::QAB(H),XS(i)
- S(c);N_GUARD::QAR1(H),XP(f)
- S(i);N_GUARD::QAR1(H)
- S(i);N_GUARD::QAR1(H),XS(i)
- P(f);N_GUARD::S(G)
- P(h);OGATEB::QAB(H),XS(i)
- Refutation
- P(j);
- Try
- Q(H);CHECK,XP(j)
- Refutation
- P(k);XQ(H)
- Try
- P(F);
- Vars
- S(c);N_GUARD,XR(B)::QAR1(H),XP(f)
- S(c);N_GUARD::QAR1(H),XP(f)
- S(i);N_GUARD::QAR1(H)
- S(i);N_GUARD::QAR1(H),XS(i)
- P(f);N_GUARD::S(G)
- P(h);OGATEB::QAB(H),XS(i)
- Refutation
- P(j);
- Try
- Actual
- Q(H);
- Vars
- S(c);N_GUARD,XR(B)::S(A)
- P(h);OGATEB,XP(F)::QAB(H),XS(i)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(i);N_GUARD::QAR1(H)
- S(i);N_GUARD::QAR1(H),XS(i)
- P(f);N_GUARD::QAR1(H)
- P(h);OGATEB::QAB(H),XS(i)
- P(j);N_GUARD::QAB1(H),XP(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).