MESON Chess Problem Database
Problem Display
PID: 275450 (N3Q1N1/b6K/n2p1P1P/1Ppk1r2/2p2pBn/2P5/4P3/8 w - - 0 1)
Davis, Edward
The Problemist, 1934
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qc6#
- 1...Rg5
- 2.Qe6#
- 1...Rh5
- 2.Qe6#
- 1...Rxf6
- 2.Sxf6#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...Sb4
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...f3
- 2.e4#
- 1...Re5
- Tries
- 1.Kg7?
- 1...Rxf6
- 2.Sxf6#
- 1...Re5
- 2.Qc6#
- 1...Rh5
- 2.Qe6#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...Sb4
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...f3
- 2.e4#
- 1...Rg5+!
- 1...Rxf6
- 1.Kh8?
- 1...Rxf6
- 2.Sxf6#
- 1...Re5
- 2.Qc6#
- 1...Rg5
- 2.Qe6#
- 1...Rh5
- 2.Qe6#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sb4
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...f3
- 2.e4#
- 1...Sg6+!
- 1...Rxf6
- 1.Bxf5?
- threat
- 2.Be4#
- 2.Qe4#
- 2.Qe6#
- 1...Sc7
- 2.Sxc7#
- 2.Be4#
- 2.Qe4#
- 1...Sxf5!
- threat
- 1.e3?
- threat
- 2.e4#
- 1...Re5
- 2.Qc6#
- 1...fxe3!
- threat
- 1.bxa6?
- threat
- 2.Sc7#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Re5!
- threat
- 1.f7?
- 1...Re5
- 2.Sf6#
- 2.Qc6#
- 1...Rg5
- 2.Sf6#
- 2.Qe6#
- 1...Rh5
- 2.Sf6#
- 2.Qe6#
- 1...Rf6
- 2.Sxf6#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...Sb4
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...f3
- 2.e4#
- 1...Rxf7+!
- 1...Re5
- 1.Kg7?
- Keys
- 1.Qe7!
- 1...Rxf6
- 2.Sxf6#
- 1...Re5
- 2.Qb7#
- 1...Rg5
- 2.Qe6#
- 1...Rh5
- 2.Qe6#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...Sb4
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...f3
- 2.e4#
- 1...Rxf6
- 1.Qe7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(f);SBLOCK::QAB1(I)
- R(f);::QAB1(I)
- R(f);P_PINP(F)::QAB1(I)
- R(f);XP(E)::S(J),XR(f)
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- S(c);N_GUARD::B(C)
- S(c);N_GUARD::B(C),XS(c)
- S(g);N_GUARD::S(H)
- S(g);N_GUARD::S(H),XS(g)
- P(b);N_GUARD::P(A)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- R(f);XP(E)::S(J),XR(f)
- R(f);SBLOCK::QAB1(I)
- R(f);::QAB1(I)
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- S(c);N_GUARD::B(C)
- S(c);N_GUARD::B(C),XS(c)
- S(g);N_GUARD::S(H)
- S(g);N_GUARD::S(H),XS(g)
- P(b);N_GUARD::P(A)
- Refutation
- R(f);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- R(f);XP(E)::S(J),XR(f)
- R(f);SBLOCK::QAB1(I)
- R(f);::QAB1(I)
- R(f);P_PINP(F)::QAB1(I)
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- S(c);N_GUARD::B(C)
- S(c);N_GUARD::B(C),XS(c)
- S(g);N_GUARD::S(H)
- S(g);N_GUARD::S(H),XS(g)
- P(b);N_GUARD::P(A)
- Refutation
- S(c);CHECK
- Try
- B(C);XR(f)
- Threat
- DUALS(3)
- Refutation
- S(c);XB(C)
- Try
- P(A);
- Threat
- P(A)
- Vars
- R(f);SBLOCK::QAB1(I)
- Refutation
- P(b);XP(A)
- Try
- P(D);XS(g)
- Threat
- S(H)
- Vars
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- Refutation
- R(f);
- Try
- P(E);
- Vars
- R(f);N_GUARD::S(J),XR(f)
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- S(c);N_GUARD::B(C)
- S(c);N_GUARD::B(C),XS(c)
- S(g);N_GUARD::S(H)
- S(g);N_GUARD::S(H),XS(g)
- P(b);N_GUARD::P(A)
- Refutation
- R(f);CHECK,XP(E)
- Try
- Actual
- Q(I);
- Vars
- R(f);XP(E)::S(J),XR(f)
- R(f);SBLOCK::QAB(I)
- R(f);::QAB1(I)
- R(f);P_PINP(F)::QAB1(I)
- B(i);N_GUARD::S(H),XB(i)
- B(i);N_GUARD::S(H)
- S(c);N_GUARD::B(C)
- S(c);N_GUARD::B(C),XS(c)
- S(g);N_GUARD::S(H)
- S(g);N_GUARD::S(H),XS(g)
- P(b);N_GUARD::P(A)
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).