MESON Chess Problem Database
Problem Display
PID: 88534 (k1N1n3/8/N1q5/1R1B4/K2n4/8/8/8 w - - 0 1)
Holladay, Edgar Dinwiddie
American Chess Problemist, 1950
#2
5 + 4
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxd5
- 2.Rb8#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2
- 2.Bxc6#
- 1...Se2
- 2.Bxc6#
- 1...Sb3
- 2.Bxc6#
- 1...Sf3
- 2.Bxc6#
- 1...Sxb5
- 2.Bxc6#
- 1...Sf5
- 2.Bxc6#
- 1...Se6
- 2.Bxc6#
- 1...Sd6
- 2.Sc7#
- 1...Sf6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Qxd5
- Tries
- 1.Kb4?
- threat
- 2.Rb8#
- 1...Sxb5
- 2.Bxc6#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2+!
- threat
- 1.Bh1?
- 1...Qxh1
- 2.Rb8#
- 1...Sxb5
- 2.Bxc6#
- 1...Qg2
- 2.Rb8#
- 1...Qf3
- 2.Rb8#
- 1...Qe4
- 2.Rb8#
- 1...Qd5
- 2.Rb8#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2
- 2.Bxc6#
- 1...Se2
- 2.Bxc6#
- 1...Sb3
- 2.Bxc6#
- 1...Sf5
- 2.Bxc6#
- 1...Se6
- 2.Bxc6#
- 1...Sd6
- 2.Sc7#
- 1...Sf6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sf3!
- 1...Qxh1
- 1.Bg2?
- 1...Qxg2
- 2.Rb8#
- 1...Sxb5
- 2.Bxc6#
- 1...Qf3
- 2.Rb8#
- 1...Qe4
- 2.Rb8#
- 1...Qd5
- 2.Rb8#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2
- 2.Bxc6#
- 1...Se2
- 2.Bxc6#
- 1...Sb3
- 2.Bxc6#
- 1...Sf5
- 2.Bxc6#
- 1...Se6
- 2.Bxc6#
- 1...Sd6
- 2.Sc7#
- 1...Sf6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sf3!
- 1...Qxg2
- 1.Bf3?
- 1...Qxf3
- 2.Rb8#
- 1...Sxb5
- 2.Bxc6#
- 1...Qe4
- 2.Rb8#
- 1...Qd5
- 2.Rb8#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2
- 2.Bxc6#
- 1...Se2
- 2.Bxc6#
- 1...Sb3
- 2.Bxc6#
- 1...Sf5
- 2.Bxc6#
- 1...Se6
- 2.Bxc6#
- 1...Sd6
- 2.Sc7#
- 1...Sf6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sxf3!
- 1...Qxf3
- 1.Kb4?
- Keys
- 1.Be4!
- 1...Qxe4
- 2.Rb8#
- 1...Sxb5
- 2.Bxc6#
- 1...Sf3
- 2.Bxc6#
- 1...Qd5
- 2.Rb8#
- 1...Qb7
- 2.Bxb7#
- 1...Sc2
- 2.Bxc6#
- 1...Se2
- 2.Bxc6#
- 1...Sb3
- 2.Bxc6#
- 1...Sf5
- 2.Bxc6#
- 1...Se6
- 2.Bxc6#
- 1...Sd6
- 2.Sc7#
- 1...Sf6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Qxe4
- 1.Be4!
Anticipated by 119552(1947)
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(b);N_PINR(B),N_SPINQ(b),XB(C)::R1(B)
- Q(b);N_PINR(B),OGATE::B(C),XQ(b)
- S(a);N_GUARD::B(C),XQ(b)
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Tries
- Try
- K(A);N_SPINR(B),P-FLIGHT
- Threat
- R1(B)
- Vars
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- Q(b);OGATE,P_PINR(B)::B(C),XQ(b)
- Refutation
- S(a);CHECK
- Try
- B(C);
- Vars
- Q(b);N_PINR(B),N_SPINQ(b),XB(C)::R1(B)
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- Q(b);N_PINR(B)::R1(B)
- Q(b);N_PINR(B),OGATE::B(C),XQ(b)
- S(a);N_GUARD::B(C),XQ(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- S(a);N_SPINQ(b)
- Try
- B(C);
- Vars
- Q(b);N_PINR(B),N_SPINQ(b),XB(C)::R1(B)
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- Q(b);N_PINR(B)::R1(B)
- Q(b);N_PINR(B),OGATE::B(C),XQ(b)
- S(a);N_GUARD::B(C),XQ(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- S(a);N_SPINQ(b)
- Try
- B(C);
- Vars
- Q(b);N_PINR(B),N_SPINQ(b),XB(C)::R1(B)
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- Q(b);N_PINR(B)::R1(B)
- Q(b);N_PINR(B),OGATE::B(C),XQ(b)
- S(a);N_GUARD::B(C),XQ(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- S(a);N_SPINQ(b),XB(C)
- Try
- Actual
- B(C);
- Vars
- Q(b);N_PINR(B),N_SPINQ(b),XB(C)::R1(B)
- S(a);N_GUARD,XR(B)::B(C),XQ(b)
- S(a);N_GUARD::B(C),XQ(b)
- Q(b);N_PINR(B)::R1(B)
- Q(b);N_PINR(B),OGATE::B(C),XQ(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
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).