MESON Chess Problem Database
Problem Display
PID: 52504 (5R1r/1p6/5R1b/4kp2/1p1p1p1n/1K1Q3r/2P1pN1p/B3N1n1 w - - 0 1)
Bettmann, Henry Wald
Hartong, Jan
Good Companions (May), 1920
#2
8 + 13
| 3132 | The Good Companion Two-Mover | 1922 |
| 5308 | La genialita compositiva di Giorgio Guidelli | 2004 |
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sgf3
- 2.Qb5#
- 1...Shf3
- 2.Qb5#
- 2.Qxf5#
- 1...f3
- 2.Qxd4#
- 1...Sgf3
- Tries
- 1.Ka4?
- threat
- 2.Qb5#
- 2.Qxd4#
- 1...b5+
- 2.Qxb5#
- 1...Kd5
- 2.Qb5#
- 2.Qxd4#
- 1...Rxf8
- 2.Qxd4#
- 1...Bxf8
- 2.Qxd4#
- 1...f3
- 2.Qxd4#
- 1...h1Q
- 2.Qxd4#
- 1...h1B
- 2.Qxd4#
- 1...Sgf3
- 2.Qb5#
- 1...Shf3
- 2.Qb5#
- 2.Qxf5#
- 1...Rxd3!
- threat
- 1.Kc4?
- threat
- 2.Bxd4#
- 2.Qxd4#
- 1...Rxd3
- 2.Sexd3#
- 1...f3
- 2.Qxd4#
- 1...Sgf3
- 2.Qxe2#
- 1...Shf3
- 2.Qxf5#
- 1...b5+!
- threat
- 1.Sf3+?
- 1...Kd5
- 2.Qc4#
- 2.Qb5#
- 2.Qxd4#
- 1...Sgxf3
- 2.Qb5#
- 1...Shxf3
- 2.Qb5#
- 2.Qxf5#
- 1...Rxf3!
- 1...Kd5
- 1.Sxh3?
- threat
- 2.Qxd4#
- 1...Kd5
- 2.Qxd4#
- 1...Shf3
- 2.Qxf5#
- 1...Sgf3!
- threat
- 1.Bc3?
- threat
- 2.Qb5#
- 2.Qxd4#
- 1...Kd5
- 2.Qb5#
- 2.Qxd4#
- 1...Rxf8
- 2.Qxd4#
- 1...Bxf8
- 2.Qxd4#
- 1...bxc3
- 2.Qb5#
- 1...dxc3
- 2.Qd6#
- 1...f3
- 2.Qxd4#
- 1...h1Q
- 2.Qxd4#
- 1...h1B
- 2.Qxd4#
- 1...Sgf3
- 2.Qb5#
- 1...Shf3
- 2.Qb5#
- 2.Qxf5#
- 1...b5
- 2.Qxb5#
- 2.Qxd4#
- 1...Rxd3!
- threat
- 1.c3?
- threat
- 2.Qb5#
- 2.Qxd4#
- 1...Kd5
- 2.Qb5#
- 2.Qxd4#
- 1...Rxf8
- 2.Qxd4#
- 1...Bxf8
- 2.Qxd4#
- 1...bxc3
- 2.Qb5#
- 1...dxc3
- 2.Qd6#
- 1...f3
- 2.Qxd4#
- 1...h1Q
- 2.Qxd4#
- 1...h1B
- 2.Qxd4#
- 1...Sgf3
- 2.Qb5#
- 1...Shf3
- 2.Qb5#
- 2.Qxf5#
- 1...b5
- 2.Qxb5#
- 2.Qxd4#
- 1...Rxd3!
- threat
- 1.Ka4?
- Keys
- 1.c4!
- threat
- 2.Bxd4#
- 1...Rxd3+
- 2.Sexd3#
- 1...bxc4 ep
- 2.Qb5#
- 1...dxc4 ep
- 2.Qd6#
- 1...f3
- 2.Qxd4#
- 1...Sgf3
- 2.Qxe2#
- 1...Shf3
- 2.Qxf5#
- threat
- 1.c4!
This anticipates 198169(1920)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(a);N_PINQ(F)::QAR(F)
- P(g);N_PINQ(F)::QAB1(F),XP(f)
- Tries
- Try
- K(E);N_SPINQ(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- P(l);CHECK::QAR(F),XP(l)
- R(m);XR(H)::QAB1(F),XP(f)
- B(k);XR(H)::QAB1(F),XP(f)
- P(g);::QAB1(F),XP(f)
- P(c);::QAB1(F),XP(f)
- S(a);::QAR(F)
- Refutation
- R(d);XQ(F)
- Try
- K(E);N_SPINQ(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(d);XQ(F)::S(B),XR(d)
- P(g);::QAB1(F),XP(f)
- S(a);N_GUARD,S_CUTR(d)::QAR(F),XP(b)
- S(h);N_GUARD::QAR1(F),XP(j)
- Refutation
- P(l);CHECK
- Try
- S(B);CHECK,N_SPINQ(F)
- Vars
- S(a);XS(B)::QAR(F)
- Refutation
- R(d);P_PINQ(F),XS(B)
- Try
- S(D);N_SPINQ(F),XR(d)
- Threat
- QAB1(F),XP(f)
- Vars
- K(i);P-FLIGHT::QAR1(F),XP(f)
- S(h);N_GUARD::QAR1(F),XP(j)
- Refutation
- S(a);
- Try
- B(A);N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- R(m);XR(H)::QAB1(F),XP(f)
- B(k);XR(H)::QAB1(F),XP(f)
- P(e);N_SPINP(f),XB(A)::QAR(F)
- P(f);N_SPINP(f),OGATE,XB(A)::QAB1(F)
- P(g);::QAB1(F),XP(f)
- P(c);::QAB1(F),XP(f)
- S(a);::QAR(F)
- Refutation
- R(d);P_PINB(A),XQ(F)
- Try
- P(C);N_PINP(f),N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- R(m);XR(H)::QAB1(F),XP(f)
- B(k);XR(H)::QAB1(F),XP(f)
- P(e);XP(C)::QAR(F)
- P(f);OGATE,P_SPINP(f),XP(C)::QAB1(F)
- P(g);::QAB1(F),XP(f)
- P(c);::QAB1(F),XP(f)
- S(a);::QAR(F)
- Refutation
- R(d);P_PINP(C),XQ(F)
- Try
- Actual
- P(C);
- Threat
- B(A),XP(f)
- Vars
- R(d);CHECK,XQ(F)::S(B),XR(d)
- P(e);EP,N_PINQ(F),N_SPINP(f),XP(C)::QAR(F)
- P(f);EP,N_PINQ(F),XP(C)::QAB1(F)
- P(g);N_PINQ(F)::QAB1(F),XP(f)
- S(a);N_PINQ(F)::QAR(F),XP(b)
- S(h);N_PINQ(F)::QAR1(F),XP(j)
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).