MESON Chess Problem Database
Problem Display
PID: 207751 (8/2KP4/5r2/4RpB1/3p4/5k2/2Q3R1/2n2r2 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1984
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Rf2
- 2.Qxf2#
- 1...Ra6
- 2.Rxf5#
- 1...Rb6
- 2.Rxf5#
- 1...Rc6+
- 2.Qxc6#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf7
- 2.Qc6#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Se2
- 2.Qxe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rd1
- Tries
- 1.Kb7?
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Ra6
- 2.Rxf5#
- 1...Rc6
- 2.Rxf5#
- 2.Qxc6#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf7
- 2.Qc6#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rb6+!
- 1...Rf2
- 1.Kc8?
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Ra6
- 2.Rxf5#
- 1...Rb6
- 2.Rxf5#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf7
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rf8+!
- 1...Rc6+
- 1.Kd8?
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Ra6
- 2.Rxf5#
- 1...Rb6
- 2.Rxf5#
- 1...Rc6
- 2.Rxf5#
- 2.Qxc6#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf7
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rf8+!
- 1...Rf2
- 1.Bh6?
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Ra6
- 2.Rxf5#
- 1...Rb6
- 2.Rxf5#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rf7
- 2.Qc6#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rxh6!
- 1...Rc6+
- 1.Re1?
- threat
- 2.Rxf1#
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rxe1!
- threat
- 1.Re6?
- threat
- 2.Qc6#
- 1...Re1
- 2.Qf2#
- 1...Rxe6!
- threat
- 1.d8Q?
- threat
- 2.Qd5#
- 1...Rc6+
- 2.Qxc6#
- 1...Re1
- 2.Qf2#
- 1...Rd6
- 2.Rxf5#
- 1...Rf7+!
- threat
- 1.d8S?
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Ra6
- 2.Rxf5#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Rb6
- 2.Rxf5#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rf7+!
- 1...Rc6+
- 1.d8B?
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Ra6
- 2.Rxf5#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Rb6
- 2.Rxf5#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rf7+!
- 1...Rc6+
- 1.d8R?
- 1...Rc6+
- 2.Qxc6#
- 1...Rf2
- 2.Qxf2#
- 1...Se2
- 2.Qxe2#
- 1...Ra6
- 2.Rxf5#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Rb6
- 2.Rxf5#
- 1...Rd6
- 2.Rxf5#
- 1...Re6
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qe2#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qe2#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rf7+!
- 1...Rc6+
- 1.Kb7?
- Keys
- 1.Ree2!
- 1...Rc6+
- 2.Qxc6#
- 1...Sxe2
- 2.Qxe2#
- 1...Rf2
- 2.Rexf2#
- 1...Rd1
- 2.Ref2#
- 1...Re1
- 2.Ref2#
- 1...Rg1
- 2.Ref2#
- 1...Rh1
- 2.Ref2#
- 1...Ra6
- 2.Qxf5#
- 1...Rb6
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Re6
- 2.Qxf5#
- 1...Rg6
- 2.Qxf5#
- 1...Rh6
- 2.Qxf5#
- 1...Rf7
- 2.Qc6#
- 1...Rf8
- 2.Qc6#
- 1...Sa2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...d3
- 2.Re3#
- 1...f4
- 2.Qe4#
- 1...Rc6+
- 1.Ree2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(f);N_GUARD::R(C),XP(e)
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(f);N_GUARD,P_PINP(F)::QAB(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::R(C),XP(e)
- R(f);N_GUARD,P_PINP(F)::QAB(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- K(E);P-FLIGHT
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::R(C),XP(e)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::R(C),XP(e)
- R(f);N_GUARD,P_PINP(F)::R(C),XP(e)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- B(D);
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::R(C),XP(e)
- R(f);N_GUARD,P_PINP(F)::QAB(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);XB(D)
- Try
- R(C);
- Threat
- R(C),XR(b)
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(b);XR(C)
- Try
- R(C);
- Threat
- QAB(A)
- Vars
- R(b);N_GUARD::QAR1(A)
- Refutation
- R(f);XR(C)
- Try
- P(F);
- Threat
- QAB(F)
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::R(C),XP(e)
- Refutation
- R(f);CHECK
- Try
- P(F);
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(f);N_GUARD::R(C),XP(e)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- P(F);
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(f);N_GUARD::R(C),XP(e)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- P(F);
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(f);N_GUARD::R(C),XP(e)
- R(b);N_GUARD::QAR1(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB1(A)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(A)
- Refutation
- R(f);CHECK
- Try
- Actual
- R(C);
- Vars
- R(f);CHECK,N_GUARD::QAB(A),XR(f)
- S(a);OGATE,XR(C)::QAB1(A),XS(a)
- R(b);N_GUARD::R1(C),XR(b)
- R(b);N_GUARD::R1(C)
- R(f);N_GUARD::QAR2(A),XP(e)
- R(f);N_GUARD,P_PINP(F)::QAB(A)
- R(f);N_GUARD::QAB(A)
- S(a);N_GUARD::QAR2(A)
- S(a);N_GUARD::QAR2(A),XS(a)
- P(d);N_GUARD::R1(C)
- P(e);N_GUARD::QAB1(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).