MESON Chess Problem Database
Problem Display
PID: 4569 (8/8/8/b7/1p3p2/1P1k1K2/1QNpR3/8 w - - 0 1)
Shinkman, William Anthony
Detroit Free Press, 1880
#2
5 + 5
| 2681 | All Change Here! | 1919 |
| 3925 | The Golden Argosy | 1929 |
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
SOLUTION
- SOUND
- Sets
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- Tries
- 1.Qa1?
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Kxc2!
- 1...d1Q
- 1.Qe5?
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Kxc2!
- 1...d1Q
- 1.Qf6?
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Kxc2!
- 1...d1Q
- 1.Qg7?
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Kxc2!
- 1...d1Q
- 1.Qh8?
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Se1#
- 2.Qd4#
- 1...d1B
- 2.Se1#
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Kxc2!
- 1...d1Q
- 1.Qa1?
- Keys
- 1.Re1!
- 1...dxe1S+
- 2.Sxe1#
- 1...d1Q+
- 2.Rxd1#
- 1...d1B+
- 2.Rxd1#
- 1...dxe1Q
- 2.Sxe1#
- 1...dxe1B
- 2.Sxe1#
- 1...dxe1R
- 2.Sxe1#
- 1...d1S
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...dxe1S+
- 1.Re1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(e);N_GUARD::S(B),XP(c)
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- Tries
- Try
- Q(A);
- Vars
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- B(e);N_GUARD::S(B),XP(c)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XS(B)
- Try
- Q(A);
- Vars
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- B(e);N_GUARD::S(B),XP(c)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XS(B)
- Try
- Q(A);
- Vars
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- B(e);N_GUARD::S(B),XP(c)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XS(B)
- Try
- Q(A);
- Vars
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- B(e);N_GUARD::S(B),XP(c)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XS(B)
- Try
- Q(A);
- Vars
- P(a);P_PINR(C)::QAR1(A)
- P(a);::QAR1(A)
- B(e);N_GUARD::S(B),XP(c)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XS(B)
- Try
- Actual
- R(C);
- Vars
- P(a);CHECK,XR(C)::S(B),XS(a)
- P(a);CHECK,OGATEB::R(C),XQ(a)
- P(a);CHECK,OGATEB::R(C),XB(a)
- P(a);XR(C)::S(B),XQ(a)
- P(a);XR(C)::S(B),XB(a)
- P(a);XR(C)::S(B),XR(a)
- P(a);OGATEB::R(C),XS(a)
- P(a);OGATEB::R(C),XR(a)
- B(e);N_GUARD::S(B),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).