MESON Chess Problem Database
Problem Display
PID: 136434 (3r4/1p6/1P4R1/NpP2QK1/1P2p1P1/1p1k4/1R6/3N4 w - - 0 1)
Densmore, Darso James
Source?, 1910
#2
10 + 6
| 14689 | A Memorial to D. J. Densmore | 1920 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Kd4
- Tries
- 1.Kf4?
- threat
- 2.Qxe4#
- 1...Kd4
- 2.Rd2#
- 2.Qxe4#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 1...Rd4!
- threat
- 1.Kh4?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rh8+!
- 1...Kd4
- 1.Kh5?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rh8+!
- 1...Kd4
- 1.Kh6?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rh8+!
- 1...Kd4
- 1.Sxb3?
- threat
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rf8
- 2.Qd5#
- 1...Kc4!
- threat
- 1.Rg2?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...b2!
- 1...Kd4
- 1.Rh2?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...b2!
- 1...Kd4
- 1.Re6?
- threat
- 2.Qxe4#
- 1...Kd4
- 2.Rd2#
- 2.Qxe4#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rg8+!
- threat
- 1.Rf6?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8+!
- 1...Kd4
- 1.Rh6?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Rh3#
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8+!
- 1...Kd4
- 1.Rg7?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd7
- 2.Rxd7#
- 2.Qxd7#
- 1...Ra8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd7#
- 2.Qd7#
- 2.Qd5#
- 1...Rd6!
- 1...Kd4
- 1.Qf2?
- threat
- 2.Rd2#
- 2.Rxb3#
- 2.Qe3#
- 2.Qd2#
- 1...e3
- 2.Qxe3#
- 1...Rd5+!
- threat
- 1.Qf4?
- threat
- 2.Rd2#
- 2.Qd2#
- 2.Qe3#
- 1...Kd4
- 2.Rd2#
- 1...e3
- 2.Qxe3#
- 1...Rd5+!
- threat
- 1.Qe5?
- threat
- 2.Qc3#
- 1...Rd5
- 2.Qxd5#
- 1...e3
- 2.Qxe3#
- 1...Rd4!
- threat
- 1.c6?
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qf1#
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rb8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rc8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Re8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rf8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Rg8
- 2.Qd7#
- 2.Qd5#
- 1...Rh8
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...bxc6!
- 1...Kd4
- 1.Kf4?
- Keys
- 1.Qe6!
- 1...Rd5+
- 2.Qxd5#
- 1...Kd4
- 2.Rd2#
- 1...Rd4
- 2.Qxb3#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rb8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rc8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Re8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rf8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rg8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...Rh8
- 2.Qd5#
- 2.Qd7#
- 2.Qd6#
- 1...e3
- 2.Qxe3#
- 1...Rd5+
- 1.Qe6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Tries
- Try
- K(H);S_FLIGHT
- Threat
- QAB1(G),XP(c)
- Vars
- R(f);N_GUARD,P_PINQ(G)::R(J)
- Refutation
- R(f);
- Try
- K(H);S_FLIGHT
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- K(H);P-FLIGHT
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD::QAR2(G),XR(f)
- R(f);N_GUARD,P_PINR(J)::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- S(E);XP(a)
- Threat
- QAB(G)
- Vars
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::QAR2(G)
- Refutation
- K(b);N_SPINP(c),S_FLIGHT
- Try
- R(B);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- P(a);
- Try
- R(B);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- P(a);
- Try
- R(J);
- Threat
- QAB1(G),XP(c)
- Vars
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- R(J);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- R(J);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- R(f);CHECK
- Try
- R(J);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- Refutation
- R(f);
- Try
- Q(G);N_PINP(c)
- Threat
- DUALS(4)
- Vars
- P(c);::QAR1(G),XP(c)
- Refutation
- R(f);CHECK
- Try
- Q(G);N_PINP(c)
- Threat
- DUALS(3)
- Vars
- K(b);P-FLIGHT,P_SPINP(c)::R(B)
- P(c);::QAR1(G),XP(c)
- Refutation
- R(f);CHECK
- Try
- Q(G);N_PINP(c)
- Threat
- QAR1(G)
- Vars
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- P(c);OGATE::QAR1(G),XP(c)
- Refutation
- R(f);
- Try
- P(F);
- Vars
- K(b);N_SPINP(c),P-FLIGHT::R(B)
- R(f);SBLOCK::QAB(G)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- R(f);N_GUARD::R(J),XR(f)
- R(f);N_GUARD::QAR(G),XR(f)
- Refutation
- P(e);XP(F)
- Try
- Actual
- Q(G);N_PINP(c)
- Vars
- R(f);CHECK,N_GUARD::QAR2(G),XR(f)
- K(b);P-FLIGHT::R(B)
- R(f);SBLOCK::QAR2(G),XP(a)
- R(f);N_GUARD::QAR(G),XR(f)
- P(c);OGATE::QAR1(G),XP(c)
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).