MESON Chess Problem Database
Problem Display
PID: 184956 (bb2Nr2/p2QR3/3p1P1p/3kBp1B/NP3PpK/n2P4/4n3/8 w - - 0 1)
Gevers, Raymond
British Chess Magazine, 1917
#2
11 + 11
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rxf6
- 2.Sxf6#
- 1...Rf7
- 2.Bxf7#
- 1...Rxe8
- 2.Bf7#
- 1...Rg8
- 2.Bf7#
- 1...Rh8
- 2.Bf7#
- 1...Bc6
- 2.Qe6#
- 1...Bb7
- 2.Qxb7#
- 1...Bc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sb1
- 2.Qb5#
- 1...Sc2
- 2.Qb5#
- 1...Sc4
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...g3
- 2.Bf3#
- 1...a5
- 2.Sb6#
- 1...a6
- 2.Sb6#
- 1...Rxf6
- Tries
- 1.Ba1?
- threat
- 2.Re5#
- 1...Rxe8
- 2.Bf7#
- 1...Sc4
- 2.Qb5#
- 1...Sc3!
- threat
- 1.Bb2?
- threat
- 2.Re5#
- 1...Rxe8
- 2.Bf7#
- 1...Sc4
- 2.Qb5#
- 1...Sc3!
- threat
- 1.Bc3?
- threat
- 2.Re5#
- 1...Rxe8
- 2.Bf7#
- 1...Sc4
- 2.Qb5#
- 1...Sxc3!
- threat
- 1.Bxg4?
- threat
- 2.Bf3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...fxg4!
- threat
- 1.f7?
- threat
- 2.Sf6#
- 1...Rxf7
- 2.Bxf7#
- 1...Rxe8!
- threat
- 1.Ba1?
- Keys
- 1.Qc8!
- 1...Rxf6
- 2.Sxf6#
- 1...Rxe8
- 2.Bf7#
- 1...Sxf4
- 2.Sc3#
- 1...dxe5
- 2.Qc5#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Sc3#
- 1...Rf7
- 2.Bxf7#
- 1...Rg8
- 2.Bf7#
- 1...Rh8
- 2.Bf7#
- 1...Bc6
- 2.Qe6#
- 1...Bb7
- 2.Qxb7#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...g3
- 2.Bf3#
- 1...a5
- 2.Sb6#
- 1...a6
- 2.Sb6#
- 1...Rxf6
- 1.Qc8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(k);XP(H)::S(K),XR(k)
- R(k);N_GUARD::B(G),XR(k)
- R(k);N_GUARD,XS(K)::B(G)
- R(k);N_GUARD::B(G)
- B(i);SBLOCK::QAB1(I)
- B(i);N_GUARD::QAB(I),XB(i)
- B(j);N_GUARD::S(K),XB(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XP(D)::S(B)
- S(b);N_GUARD::QAR2(I)
- S(b);N_GUARD::QAR2(I),XS(b)
- P(c);OGATE::B(G)
- P(h);N_GUARD::S(B)
- Tries
- Try
- B(F);
- Threat
- R1(J)
- Vars
- R(k);N_GUARD,XS(K)::B(G)
- S(b);N_GUARD::QAR2(I)
- Refutation
- S(a);
- Try
- B(F);
- Threat
- R1(J)
- Vars
- R(k);N_GUARD,XS(K)::B(G)
- S(b);N_GUARD::QAR2(I)
- Refutation
- S(a);
- Try
- B(F);
- Threat
- R1(J)
- Vars
- R(k);N_GUARD,XS(K)::B(G)
- S(b);N_GUARD::QAR2(I)
- Refutation
- S(a);XB(F)
- Try
- B(G);XP(c)
- Threat
- B(G)
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- P(e);XB(G)
- Try
- P(H);
- Threat
- S(K)
- Vars
- R(k);OGATE,XP(H)::B(G),XR(k)
- Refutation
- R(k);XS(K)
- Try
- Actual
- Q(I);N_PINP(f)
- Vars
- R(k);XP(H)::S(K),XR(k)
- R(k);N_GUARD,XS(K)::B(G)
- S(a);N_GUARD,XP(D)::S(B)
- P(f);N_GUARD,XB(F)::QAR1(I)
- B(j);OGATE::QAB(I),XB(i)
- S(a);N_GUARD::S(B)
- R(k);N_GUARD::B(G),XR(k)
- R(k);N_GUARD::B(G)
- B(i);SBLOCK::QAB1(I)
- B(i);N_GUARD::QAB(I),XB(i)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- P(c);OGATE::B(G)
- P(h);N_GUARD::S(B)
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).