MESON Chess Problem Database
Problem Display
PID: 243450 (krN5/1n6/2Q5/qN6/PpK5/1P6/8/R7 w - - 0 1)
Buchwald, Julius
Source?, 0000
#2
7 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 2.Rxa4#
- 1...Qxb5+
- 2.axb5#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- Tries
- 1.Kd3?
- 1...Qxb5+
- 2.axb5#
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 2.Rxa4#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qd8+!
- 1...Qxb5+
- 1.Kd5?
- 1...Qxb5+
- 2.axb5#
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 2.Rxa4#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 2.Qa6#
- 1...Qa6
- 2.Sc7#
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qd8+!
- 1...Qxb5+
- 1.Rb1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Rc1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Rd1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Re1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Rf1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Rg1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Rh1?
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+!
- 1...Qxa4
- 1.Kd3?
- Keys
- 1.Ra2!
- 1...Qxb5+
- 2.axb5#
- 1...Qxa4
- 2.Sc7#
- 2.Sb6#
- 2.Rxa4#
- 1...Rxc8
- 2.Qxc8#
- 1...Qb6
- 2.Sxb6#
- 1...Qc7
- 2.Sxc7#
- 1...Qd8
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qa7
- 2.Sc7#
- 1...Qxb5+
- 1.Ra2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);CHECK,OGATE,XS(E)::R(A)+P(C),XQ(b)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- Q(b);CHECK,OGATE,XS(E)::R(A)+P(C),XQ(b)
- R(e);OGATE,XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK
- Try
- K(D);P_SPINS(E),S_FLIGHT
- Vars
- Q(b);CHECK,OGATE,XS(E)::R(A)+P(C),XQ(b)
- R(e);OGATE,XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD,N_PINS(E)::S(G),XQ(b)
- Q(b);N_PINS(E)::S(E)
- Refutation
- Q(b);CHECK,N_PINS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(A);
- Vars
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);CHECK,XS(E)
- Try
- Actual
- R(A);
- Vars
- Q(b);CHECK,OGATE,XS(E)::R(A)+P(C),XQ(b)
- R(e);OGATE,P_PINQ(F),XS(G)::QAR2(F),XR(e)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);N_GUARD,P_PINQ(F)::S(E),XQ(b)
- Q(b);N_GUARD::QAR2(F)
- Q(b);N_GUARD,P_PINS(E)::QAR2(F),XQ(b)
- Q(b);N_GUARD::S(E)
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).