MESON Chess Problem Database
Problem Display
PID: 123042 (4NK2/3p4/1p1pkB2/3r2p1/2n1n1P1/5N2/B7/1bqRR1b1 w - - 0 1)
Youngs, Joe Casey
Northwest Chess, 1975
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Rxd6#
- 1...Rb5
- 2.Rxd6#
- 1...Rc5
- 2.Rxd6#
- 1...Rf5
- 2.Rxd6#
- 1...Sb2
- 2.Bxd5#
- 1...Sd2
- 2.Sxg5#
- 1...Sa3
- 2.Bxd5#
- 1...Se3
- 2.Sd4#
- 1...Sa5
- 2.Bxd5#
- 1...Se5
- 2.Bxd5#
- 1...Ra5
- Tries
- 1.Sxg5+?
- 1...Rxg5
- 2.Rxd6#
- 1...Qxg5!
- 1...Rxg5
- 1.Rxe4+?
- 1...Re5
- 2.Rxd6#
- 1...Se5
- 2.Bxd5#
- 1...Bxe4!
- 1...Re5
- 1.Sxg5+?
- Keys
- 1.Kg7!
- threat
- 2.Sc7#
- 1...Rc5
- 2.Rxd6#
- 1...Sb2
- 2.Bxd5#
- 1...Sd2
- 2.Sxg5#
- 1...Sa3
- 2.Bxd5#
- 1...Se3
- 2.Sd4#
- 1...Sa5
- 2.Bxd5#
- 1...Se5
- 2.Bxd5#
- threat
- 1.Kg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(f);N_SPINS(e),OGATE,P_SPINS(d)::R1(A),XP(i)
- R(f);N_SPINS(e),OGATE,P_PINB(F),P_SPINS(d)::R1(A),XP(i)
- S(d);OGATE,P_SPINR(f)::B(C),XR(f)
- S(d);P_SPINR(f),S_CUTQ(b)::S(D),XP(g)
- S(d);N_SPINS(e),P_SPINR(f),S_CUTB(c)::S(D)
- S(d);N_SPINS(e),OGATE,P_SPINR(f)::B(C),XR(f)
- Tries
- Try
- S(D);CHECK,XP(g)
- Vars
- R(f);N_SPINS(e),OGATE,P_SPINS(d),XS(D)::R1(A),XP(i)
- Refutation
- Q(b);XS(D)
- Try
- R(B);CHECK,XS(e)
- Vars
- R(f);OGATE,P_SPINR(f),P_SPINS(d)::R1(A),XP(i)
- S(d);OGATE,P_SPINR(f),P_SPINS(d)::B(C),XR(f)
- Refutation
- B(a);XR(B)
- Try
- Actual
- K(H);S_FLIGHT
- Threat
- S(G)
- Vars
- R(f);N_SPINS(e),OGATE,P_SPINS(d)::R1(A),XP(i)
- S(d);OGATE,P_SPINR(f)::B(C),XR(f)
- S(d);P_SPINR(f),S_CUTQ(b)::S(D),XP(g)
- S(d);N_SPINS(e),P_SPINR(f),S_CUTB(c)::S(D)
- S(d);N_SPINS(e),OGATE,P_SPINR(f)::B(C),XR(f)
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).