MESON Chess Problem Database
Problem Display
PID: 62685 (8/3N1pp1/b2K1p2/r1p1p3/P1p1k1B1/Q1R1P3/PP4P1/8 w - - 0 1)
Lewis, Brian Noel
Chess, 1944
#2
10 + 9
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxa4
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb5
- 2.Sxc5#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...f5
- 2.Bf3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...Rxa4
- Tries
- 1.Bh3?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...f5!
- 1...Rxa4
- 1.Be6?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...f5
- 2.Bd5#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...fxe6!
- 1...Rxa4
- 1.Rc1?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...f5
- 2.Bf3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...c3!
- 1...Rxa4
- 1.Rc2?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...f5
- 2.Bf3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...c3!
- 1...Rxa4
- 1.Qb4?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Qxc4#
- 1...Bb7
- 2.Qxc4#
- 2.Qxb7#
- 1...Bc8
- 2.Qxc4#
- 1...f5
- 2.Bf3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...cxb4!
- 1...Rxa4
- 1.g3?
- 1...Rxa4
- 2.Sxc5#
- 1...Bb5
- 2.Sxc5#
- 1...Rb5
- 2.Rxc4#
- 1...Bb7
- 2.Rxc4#
- 1...Bc8
- 2.Rxc4#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...f5!
- 1...Rxa4
- 1.Bh3?
- Keys
- 1.Qxc5!
- 1...Rxa4
- 2.Qd5#
- 2.Qc6#
- 1...Rxc5
- 2.Sxc5#
- 1...Bb5
- 2.Qd5#
- 1...Rb5
- 2.Qxc4#
- 1...Bb7
- 2.Qxc4#
- 1...Bc8
- 2.Qxc4#
- 1...f5
- 2.Bf3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...Rxa4
- 1.Qxc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);S_CUTR(c)::S(J),XP(d)
- B(f);N_GUARD::R(E),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
- Tries
- Try
- B(H);
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);N_GUARD::R(E),XP(a)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(g);
- Try
- B(H);
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);N_GUARD::R(E),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(h);XB(H)
- Try
- R(E);
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);N_GUARD::R(E),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(a);
- Try
- R(E);
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);N_GUARD::R(E),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(a);
- Try
- Q(D);P_PINP(a)
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::QAR2(D),XP(a)
- B(f);N_GUARD::QAR2(D),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(d);N_SPINP(a),XQ(D)
- Try
- P(C);
- Vars
- R(c);N_GUARD,XP(G)::S(J),XP(d)
- B(f);S_CUTR(c)::S(J),XP(d)
- R(c);S_CUTB(f)::R(E),XP(a)
- B(f);N_GUARD::R(E),XP(a)
- P(i);N_GUARD::S(J),XP(g)
- Refutation
- P(g);
- Try
- Actual
- Q(D);XP(d)
- Vars
- R(c);XQ(D)::S(J),XR(c)
- B(f);S_CUTR(c)::QAB1(D)
- R(c);S_CUTB(f)::QAR2(D),XP(a)
- B(f);N_GUARD::QAR2(D),XP(a)
- P(g);SBLOCK::B(H)
- P(i);N_GUARD::S(J),XP(g)
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).