MESON Chess Problem Database
Problem Display
PID: 71788 (6B1/3R1r2/K1pn2N1/2k3p1/3bn1P1/PP3Q2/4P3/3R4 w - - 0 1)
Dobbs, Gilbert S
Checkmate, 1904
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Qf5#
- 1...Rxf3
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rf5
- 2.b4#
- 1...Rf6
- 2.b4#
- 1...Rxd7
- 2.b4#
- 1...Re7
- 2.b4#
- 1...Rg7
- 2.b4#
- 1...Rh7
- 2.b4#
- 1...Rf8
- 2.b4#
- 1...Be3
- 2.Qxe3#
- 1...Sc4
- 2.b4#
- 1...Kd5
- Tries
- 1.Sf4?
- 1...Rxf4
- 2.b4#
- 1...Rxd7
- 2.Sd3#
- 2.b4#
- 1...Rf5
- 2.Sd3#
- 2.b4#
- 1...Rf6
- 2.Sd3#
- 2.b4#
- 1...Re7
- 2.Sd3#
- 2.b4#
- 1...Rg7
- 2.Sd3#
- 2.b4#
- 1...Rh7
- 2.Sd3#
- 2.b4#
- 1...Rf8
- 2.Sd3#
- 2.b4#
- 1...Ba1
- 2.Se6#
- 1...Bg1
- 2.Se6#
- 1...Bb2
- 2.Se6#
- 1...Bf2
- 2.Se6#
- 1...Bc3
- 2.Se6#
- 1...Be3
- 2.Se6#
- 2.Qxe3#
- 1...Be5
- 2.Se6#
- 1...Bf6
- 2.Se6#
- 1...Bg7
- 2.Se6#
- 1...Bh8
- 2.Se6#
- 1...Sd2
- 2.Sd3#
- 2.Se6#
- 1...Sf2
- 2.Se6#
- 1...Sc3
- 2.Sd3#
- 2.Se6#
- 1...Sg3
- 2.Sd3#
- 2.Se6#
- 1...Sf6
- 2.Sd3#
- 2.Se6#
- 1...Sc4
- 2.Sd3#
- 2.Se6#
- 2.b4#
- 1...Sb5
- 2.Sd3#
- 2.Se6#
- 1...Sf5
- 2.Sd3#
- 2.Se6#
- 1...Sb7
- 2.Sd3#
- 2.Se6#
- 1...Sc8
- 2.Sd3#
- 2.Se6#
- 1...Se8
- 2.Sd3#
- 2.Se6#
- 1...gxf4!
- 1...Rxf4
- 1.Qf5+?
- 1...Rxf5
- 2.b4#
- 1...Be5
- 2.Qxe5#
- 1...Sxf5!
- 1...Rxf5
- 1.b4+?
- 1...Kd5
- 2.Bxf7#
- 2.Qb3#
- 2.Qxf7#
- 1...Kc4!
- 1...Kd5
- 1.Sf4?
- Keys
- 1.Sf8!
- 1...Kd5
- 2.Qf5#
- 1...Rxf3
- 2.b4#
- 1...Rxd7
- 2.Sxd7#
- 2.b4#
- 1...Rxf8
- 2.b4#
- 1...Ba1
- 2.Se6#
- 1...Rf4
- 2.b4#
- 1...Rf5
- 2.b4#
- 1...Rf6
- 2.b4#
- 1...Re7
- 2.b4#
- 1...Rg7
- 2.b4#
- 1...Rh7
- 2.b4#
- 1...Bg1
- 2.Se6#
- 1...Bb2
- 2.Se6#
- 1...Bf2
- 2.Se6#
- 1...Bc3
- 2.Se6#
- 1...Be3
- 2.Se6#
- 2.Qxe3#
- 1...Be5
- 2.Se6#
- 1...Bf6
- 2.Se6#
- 1...Bg7
- 2.Se6#
- 1...Bh8
- 2.Se6#
- 1...Sd2
- 2.Se6#
- 1...Sf2
- 2.Se6#
- 1...Sc3
- 2.Se6#
- 1...Sg3
- 2.Se6#
- 1...Sf6
- 2.Se6#
- 1...Sc4
- 2.Se6#
- 2.b4#
- 1...Sb5
- 2.Se6#
- 1...Sf5
- 2.Se6#
- 1...Sb7
- 2.Se6#
- 1...Sc8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Kd5
- 1.Sf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 19
- REMOVED MATES = 3
- Sets
- K(c);P-FLIGHT,P_SPINB(a),P_SPINR(g),P_SPINS(b)::QAR2(E)
- R(g);XQ(E)::P(D)
- R(g);::P(D)
- R(g);XR(I)::P(D)
- B(a);OGATEB::QAB(E),XB(a)
- S(f);SBLOCK::P(D)
- Tries
- Try
- S(H);
- Vars
- R(g);XS(H)::P(D)
- B(a);::S(H)
- S(b);::S(H)
- Refutation
- P(d);XS(H)
- Try
- Q(E);CHECK
- Vars
- R(g);XQ(E)::P(D)
- B(a);N_GUARD,P_SPINB(a)::QAR2(E),XB(a)
- Refutation
- S(f);XQ(E)
- Try
- P(D);CHECK
- Refutation
- K(c);P-FLIGHT,P_SPINR(g)
- Try
- Actual
- S(H);
- Vars
- K(c);P-FLIGHT,P_SPINB(a),P_SPINR(g),P_SPINS(b)::QAR2(E)
- R(g);XQ(E)::P(D)
- R(g);XS(H)::P(D)
- B(a);::S(H)
- R(g);::P(D)
- S(b);::S(H)
- S(f);::S(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).