MESON Chess Problem Database
Problem Display
PID: 145380 (2r5/3p4/N4Q2/2pk4/7R/1pB4B/1K4R1/5nr1 w - - 0 1)
Lewis, Robert Tony
3rd Prize, The Problemist, 1968
#2
7 + 7
| 133 | The Problemist Supplement | 2011 |
| 56 | The Problemist | 2014 |
| 133 | The Problemist Supplement | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Rg5#
- 1...Rxg2+
- 2.Bxg2#
- 1...Rc6
- 2.Qe5#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Re8
- 2.Sc7#
- 1...Rf8
- 2.Sc7#
- 1...Rg8
- 2.Sc7#
- 1...Rh8
- 2.Sc7#
- 1...Sd2
- 2.Rxd2#
- 1...Sh2
- 2.Rd2#
- 1...Se3
- 2.Rd2#
- 1...Sg3
- 2.Rd2#
- 1...c4
- 2.Rd4#
- 1...d6
- 2.Qf3#
- 1...Rh1
- Tries
- 1.Be5?
- threat
- 2.Qd6#
- 1...Rxg2+
- 2.Bxg2#
- 1...d6
- 2.Qxd6#
- 1...Rc6!
- threat
- 1.Bxd7?
- threat
- 2.Qe5#
- 2.Qe6#
- 1...Rc6
- 2.Bxc6#
- 2.Qe5#
- 2.Qxc6#
- 1...Re8
- 2.Sc7#
- 2.Bc6#
- 2.Qc6#
- 1...Rxg2+!
- threat
- 1.Rxg1?
- threat
- 2.Bg2#
- 2.Rg5#
- 1...d6
- 2.Bg2#
- 2.Qf3#
- 1...Re8
- 2.Sc7#
- 1...Rg8
- 2.Sc7#
- 1...Sd2
- 2.Rg5#
- 1...Sh2
- 2.Rd1#
- 2.Rg5#
- 1...Sg3
- 2.Rd1#
- 1...Se3!
- threat
- 1.Ra4?
- 1...Rxg2+
- 2.Bxg2#
- 1...d6
- 2.Qf3#
- 1...Rc6
- 2.Qe5#
- 1...Rh1
- 2.Rg5#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Re8
- 2.Sc7#
- 1...Rf8
- 2.Sc7#
- 1...Rg8
- 2.Sc7#
- 1...Rh8
- 2.Sc7#
- 1...Sd2
- 2.Rxd2#
- 1...Sh2
- 2.Rd2#
- 1...Se3
- 2.Rd2#
- 1...Sg3
- 2.Rd2#
- 1...c4!
- 1...Rxg2+
- 1.Rf4?
- 1...Rxg2+
- 2.Bxg2#
- 1...Rc6
- 2.Qe5#
- 1...Rh1
- 2.Rg5#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Re8
- 2.Sc7#
- 1...Rf8
- 2.Sc7#
- 1...Rg8
- 2.Sc7#
- 1...Rh8
- 2.Sc7#
- 1...Sd2
- 2.Rxd2#
- 1...Sh2
- 2.Rd2#
- 1...Se3
- 2.Rd2#
- 1...Sg3
- 2.Rd2#
- 1...c4
- 2.Rd4#
- 1...d6!
- 1...Rxg2+
- 1.Qg5+?
- 1...Kd6
- 2.Rh6#
- 1...Kc6!
- 1...Kd6
- 1.Qf5+?
- 1...Kd6
- 2.Qxd7#
- 1...Kc6!
- 1...Kd6
- 1.Qf7+?
- 1...Kd6
- 2.Rh6#
- 2.Qxd7#
- 1...Kc6!
- 1...Kd6
- 1.Be5?
- Keys
- 1.Qg6!
- 1...Rxg2+
- 2.Bxg2#
- 1...d6
- 2.Qe4#
- 1...Rc6
- 2.Qd3#
- 1...Rh1
- 2.Rg5#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Re8
- 2.Sc7#
- 1...Rf8
- 2.Sc7#
- 1...Rg8
- 2.Sc7#
- 1...Rh8
- 2.Sc7#
- 1...Sd2
- 2.Rxd2#
- 1...Sh2
- 2.Rd2#
- 1...Se3
- 2.Rd2#
- 1...Sg3
- 2.Rd2#
- 1...c4
- 2.Rh5#
- 1...Rxg2+
- 1.Qg6!
There are these versions: 155752
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::R(B)
- R(b);CHECK,OGATE,XR(B)::B(D),XR(b)
- R(g);SBLOCK::QAR1(G)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- P(d);N_GUARD::R1(E)
- P(f);SBLOCK::QAB(G)
- Tries
- Try
- B(C);
- Threat
- QAR1(G)
- Vars
- R(b);CHECK,OGATE,XR(B)::B(D),XR(b)
- P(f);::QAR1(G),XP(f)
- Refutation
- R(g);
- Try
- B(D);XP(f)
- Threat
- DUALS(2)
- Refutation
- R(b);CHECK,XR(B)
- Try
- R(B);XR(b)
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD::S(F)
- S(a);::R(B)
- S(a);OGATE::R(B)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- R(b);CHECK,OGATE,XR(B)::B(D),XR(b)
- P(f);SBLOCK::QAB(G)
- R(g);SBLOCK::QAR1(G)
- R(b);N_GUARD::R(B)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- P(d);
- Try
- R(E);
- Vars
- R(b);CHECK,OGATE,XR(B)::B(D),XR(b)
- R(g);SBLOCK::QAR1(G)
- R(b);N_GUARD::R(B)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- P(d);N_GUARD::R1(E)
- Refutation
- P(f);
- Try
- Q(G);CHECK
- Vars
- K(e);P-FLIGHT::R(E)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(G);CHECK
- Vars
- K(e);P-FLIGHT::QAR1(G),XP(f)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(G);CHECK
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- Q(G);
- Vars
- R(b);CHECK,OGATE,XR(B)::B(D),XR(b)
- P(f);SBLOCK::QAB1(G)
- R(g);SBLOCK::QAR2(G)
- R(b);N_GUARD::R(B)
- R(g);N_GUARD::S(F),XR(g)
- R(g);N_GUARD::S(F)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- P(d);SBLOCK::R(E)
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