MESON Chess Problem Database
Problem Display
PID: 133609 (4R2b/2p2Qnr/2Ppn2r/4kp1N/2P1pN1R/2K3PB/8/8 w - - 0 1)
Rendall, JL
The Field, 1961
(First published on Thu Aug 24 1961)
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxh5
- 2.Sg6#
- 1...Rf6
- 2.Qxf6#
- 1...Rg6
- 2.Sxg6#
- 1...Sxh5
- 2.Qxf5#
- 1...Sxe8
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...d5
- 2.Qxc7#
- 1...Rxh5
- Tries
- 1.Rxe6+?
- 1...Sxe6
- 2.Qxf5#
- 1...Rxe6!
- 1...Sxe6
- 1.Re7?
- 1...Rxh5
- 2.Sg6#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Ra8?
- 1...Rxh5
- 2.Sg6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sd8
- 2.Qd5#
- 1...Sf8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Rb8?
- 1...Rxh5
- 2.Sg6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sd8
- 2.Qd5#
- 1...Sf8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Rc8?
- 1...Rxh5
- 2.Sg6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sd8
- 2.Qd5#
- 1...Sf8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Rf8?
- 1...Rxh5
- 2.Sg6#
- 2.Qf6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxf8
- 2.Qd5#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sd8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Rg8?
- 1...Rxh5
- 2.Sg6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sd8
- 2.Qd5#
- 1...Sf8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5!
- 1...Rxh5
- 1.Qxe6+?
- 1...Rxe6
- 2.Sg6#
- 1...Sxe6!
- 1...Rxe6
- 1.Qf8?
- 1...Rxh5
- 2.Sg6#
- 1...Sxh5
- 2.Qxf5#
- 1...Sxe8
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...d5!
- 1...Rxh5
- 1.Rxe6+?
- Keys
- 1.Rd8!
- 1...Rxh5
- 2.Sg6#
- 1...Sxf4
- 2.gxf4#
- 1...Sxd8
- 2.Qd5#
- 1...Sxh5
- 2.Qxf5#
- 1...e3
- 2.Sd3#
- 1...Rg6
- 2.Sxg6#
- 1...Rf6
- 2.Qxf6#
- 1...Sd4
- 2.Qd5#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Qd5#
- 1...Sf8
- 2.Qd5#
- 1...Se8
- 2.Qxf5#
- 1...d5
- 2.Rxd5#
- 1...Rxh5
- 1.Rd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD,XS(G)::S(E)
- R(f);N_GUARD::QAB1(I),XR(f)
- R(f);N_GUARD::S(E),XR(f)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- S(h);N_GUARD,N_SPINS(e),XR(J)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- P(d);OGATEB::QAB(I),XP(g)
- Tries
- Try
- R(J);CHECK,XS(e)
- Vars
- S(h);XR(J)::QAR1(I),XP(c)
- Refutation
- R(f);XR(J)
- Try
- R(J);
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- R(J);N_PINS(e)
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- R(J);N_PINS(e)
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- R(J);N_PINS(e)
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- R(J);N_PINS(e)
- Vars
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(e);OGATE,XR(J)::QAR1(I)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- R(J);N_PINS(e)
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(d);
- Try
- Q(I);CHECK,XS(e)
- Vars
- R(f);P_SPINR(f),XQ(I)::S(E)
- Refutation
- S(h);P_SPINS(h),XQ(I)
- Try
- Q(I);
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- S(h);N_GUARD,N_SPINS(e),XR(J)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- Refutation
- P(d);
- Try
- Actual
- R(J);N_PINS(e)
- Vars
- R(f);N_GUARD,XS(G)::S(E)
- S(e);OGATE,XS(E)::P(B),XS(e)
- S(e);OGATE,XR(J)::QAR1(I)
- S(h);N_GUARD,XS(G)::QAR1(I),XP(c)
- P(a);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- S(e);OGATE::QAR1(I)
- S(h);N_GUARD::QAR1(I),XP(c)
- P(d);OGATE::R1(J),XP(d)
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).