MESON Chess Problem Database
Problem Display
PID: 15220 (3q4/3P4/p3R1rB/1N4P1/2p1B3/4NQ2/bp1kP1R1/2b2K2 w - - 0 1)
McWilliam, Robert C
Hlas l'udu, 1981
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rg7
- 2.Rd6#
- 1...Rg8
- 2.Rd6#
- 1...Rg7
- Tries
- 1.Sc2?
- threat
- 2.e3#
- 1...Kd1
- 2.e3#
- 1...Qxg5
- 2.d8Q#
- 2.d8R#
- 1...Rxg5
- 2.Rd6#
- 1...axb5!
- threat
- 1.Sxc4+?
- 1...Kd1
- 2.Sc3#
- 2.e3#
- 1...Bxc4!
- 1...Kd1
- 1.Sg4?
- threat
- 2.e3#
- 1...Kd1
- 2.e3#
- 1...axb5!
- threat
- 1.Sf5?
- threat
- 2.e3#
- 1...Kd1
- 2.e3#
- 1...Qxg5
- 2.d8Q#
- 2.d8R#
- 1...Rxg5
- 2.Rd6#
- 1...axb5!
- threat
- 1.Sc2?
- Keys
- 1.Sd1!
- threat
- 2.e3#
- 1...Kxd1
- 2.e3#
- 1...Qxg5
- 2.d8Q#
- 2.d8R#
- 1...Rxg5
- 2.Rd6#
- threat
- 1.Sd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(g);N_GUARD::R(I)
- Tries
- Try
- S(D);
- Threat
- R(C)+P(B)
- Vars
- K(d);P-FLIGHT::QAB(E)+P(B)
- Q(h);OGATE,P_SPINQ(h),XP(H)::P=Q
- R(g);N_GUARD,P_SPINR(g),XP(H)::R(I)
- Refutation
- P(f);XS(G)
- Try
- S(D);CHECK,XP(e)
- Refutation
- B(b);P_PINP(B),XS(D)
- Try
- S(D);
- Threat
- R(C)+P(B)
- Vars
- K(d);P-FLIGHT::QAB(E)+P(B)
- Refutation
- P(f);XS(G)
- Try
- S(D);
- Threat
- R(C)+P(B)
- Vars
- K(d);P-FLIGHT::QAB(E)+P(B)
- Q(h);OGATE,P_SPINQ(h),XP(H)::P=Q
- R(g);N_GUARD,P_SPINR(g),XP(H)::R(I)
- Refutation
- P(f);XS(G)
- Try
- Actual
- S(D);
- Threat
- R(C)+P(B)
- Vars
- K(d);P-FLIGHT,XS(D)::QAB(E)+P(B)
- Q(h);OGATE,P_SPINQ(h),XP(H)::P=Q
- R(g);N_GUARD,P_SPINR(g),XP(H)::R(I)
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).