MESON Chess Problem Database
Problem Display
PID: 67847 (q1rk4/QB1P4/1PpP1N2/4nKP1/5bp1/3p1p2/7r/4R2R w - - 0 1)
Day, EJ
Chess, 1948
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxa7
- 2.dxc8Q#
- 2.dxc8R#
- 1...Ra2
- 2.Rh8#
- 1...Rb2
- 2.Rh8#
- 1...Rc2
- 2.Rh8#
- 1...Rd2
- 2.Rh8#
- 1...Re2
- 2.Rh8#
- 1...Rf2
- 2.Rh8#
- 1...Rg2
- 2.Rh8#
- 1...Rh8
- 2.Rxh8#
- 1...Rc7
- 2.bxc7#
- 1...Sc4
- 2.Re8#
- 1...Sg6
- 2.Re8#
- 1...Sxd7
- 2.Re8#
- 1...Sf7
- 2.Re8#
- 1...Qxa7
- Tries
- 1.Rxe5?
- threat
- 2.Re8#
- 1...Re2
- 2.Rh8#
- 1...Rh8
- 2.Rxh8#
- 1...Bxe5!
- threat
- 1.Rxh2?
- threat
- 2.Rh8#
- 1...Sxd7
- 2.Re8#
- 1...Sg6
- 2.Re8#
- 1...Sf7
- 2.Re8#
- 1...Bxh2!
- threat
- 1.Qxa8?
- threat
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rxh1
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Bxg5
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sxd7
- 2.Re8#
- 2.Qxc8#
- 1...Ra2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rb2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rc2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rd2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rf2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rg2
- 2.Rh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh3
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh4
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh5
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh6
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh7
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rh8
- 2.Rxh8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rb8
- 2.Qxb8#
- 1...Bc1
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Bd2
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Be3
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Bg3
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sc4
- 2.Re8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sg6
- 2.Re8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sf7
- 2.Re8#
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...d2
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...f2
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...g3
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...c5
- 2.Qxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rxa8!
- threat
- 1.Rxe5?
- Keys
- 1.Qa2!
- threat
- 2.Qg8#
- 1...Qxa2
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rxa2
- 2.Rh8#
- 1...Sxd7
- 2.Re8#
- 1...Rh8
- 2.Rxh8#
- 1...Sc4
- 2.Re8#
- 1...Sg6
- 2.Re8#
- 1...Sf7
- 2.Re8#
- threat
- 1.Qa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(h);N_GUARD,XQ(H)::PXR(i)=Q
- R(a);OGATE::R(B)
- R(a);OGATE::R(B),XR(a)
- R(i);OGATE::P(E),XR(i)
- S(f);OGATE::R1(A)
- S(f);OGATE,XP(J)::R1(A)
- Tries
- Try
- R(A);XS(f)
- Threat
- R1(A)
- Vars
- R(a);OGATE::R(B)
- R(a);OGATE::R(B),XR(a)
- Refutation
- B(d);XR(A)
- Try
- R(B);XR(a)
- Threat
- R(B)
- Vars
- S(f);OGATE,XP(J)::R1(A)
- S(f);OGATE::R1(A)
- Refutation
- B(d);XR(B)
- Try
- Q(H);P_PINR(i),XQ(h)
- Threat
- DUALS(3)
- Vars
- R(i);OGATEB::QAR2(H),XR(i)
- Refutation
- R(i);N_SPINR(i),XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- Q(h);N_GUARD,XQ(H)::PXR(i)=Q
- R(a);OGATE,XQ(H)::R(B)
- S(f);OGATE,XP(J)::R1(A)
- R(a);OGATE::R(B),XR(a)
- S(f);OGATE::R1(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).