MESON Chess Problem Database
Problem Display
PID: 228634 (b6B/3NK3/6p1/2Rp4/1Rn1k1B1/3p2Pp/2nP1p2/r5Q1 w - - 0 1)
Shire, David J
Problem Observer, 2019
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qh1#
- 1...Ra3
- 2.Qh1#
- 1...Ra4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Ra6
- 2.Qh1#
- 1...Ra7
- 2.Qh1#
- 1...f1S
- 2.Qh1#
- 1...h2
- 2.Qg2#
- 1...d4
- 2.Sf6#
- 1...Ra2
- Tries
- 1.Rbxc4+?
- 1...Sd4
- 2.Rxd4#
- 1...d4
- 2.Sf6#
- 2.Re5#
- 1...dxc4!
- 1...Sd4
- 1.Rc6?
- threat
- 2.Sc5#
- 2.Re6#
- 1...Bxc6
- 2.Sc5#
- 1...Sxb4
- 2.Sc5#
- 1...fxg1Q
- 2.Re6#
- 1...fxg1B
- 2.Re6#
- 1...Ra5
- 2.Re6#
- 2.Qh1#
- 1...Ra6
- 2.Sc5#
- 2.Qh1#
- 1...Ra7
- 2.Re6#
- 2.Qh1#
- 1...Sd4
- 2.Sc5#
- 1...d4!
- threat
- 1.Qxf2?
- threat
- 2.Qf3#
- 2.Qf4#
- 1...Se1
- 2.Qe3#
- 2.Qd4#
- 2.Qf4#
- 1...Sd4
- 2.Qxd4#
- 2.Qf4#
- 1...g5
- 2.Bf5#
- 2.Qf3#
- 2.Qf5#
- 1...Rf1!
- threat
- 1.Qxa1?
- threat
- 2.Sf6#
- 2.Qe5#
- 2.Qh1#
- 1...Sxb4
- 2.Sf6#
- 2.Qd4#
- 2.Qh1#
- 1...f1Q
- 2.Qe5#
- 1...f1S
- 2.Sf6#
- 2.Qe5#
- 1...f1B
- 2.Sf6#
- 2.Qe5#
- 1...f1R
- 2.Qe5#
- 1...Se1
- 2.Sf6#
- 2.Qd4#
- 2.Qe5#
- 1...Se3
- 2.Sf6#
- 2.Qd4#
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...d4
- 2.Sf6#
- 2.Qh1#
- 2.Qxa8#
- 1...Sxa1!
- threat
- 1.Rbxc4+?
- Keys
- 1.Rxd5!
- threat
- 2.Sf6#
- 1...Kxd5
- 2.Bf3#
- 1...Bxd5
- 2.Sc5#
- 1...f1Q
- 2.Re5#
- 1...f1R
- 2.Re5#
- 1...Ra6
- 2.Qh1#
- 1...Ra7
- 2.Qh1#
- threat
- 1.Rxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::QAB(A)
- R(a);N_GUARD,P_PINS(G)::QAB(A)
- P(c);S_CUTR(a)::QAB(A)
- P(e);N_GUARD::QAB(A)
- P(h);N_SPINS(f),SBLOCK::S(G)
- Tries
- Try
- R(D);CHECK,XS(f)
- Vars
- S(b);N_GUARD,P_SPINS(b)::R1(D),XS(b)
- Refutation
- P(h);XR(D)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- B(j);XR(F)::S(G)
- S(b);N_SPINS(f),XR(D)::S(G)
- P(c);XQ(A)::R(F)
- S(b);N_SPINS(f)::S(G)
- Refutation
- P(h);N_SPINS(f)
- Try
- Q(A);XP(c)
- Threat
- DUALS(2)
- Refutation
- R(a);
- Try
- Q(A);XR(a)
- Threat
- DUALS(3)
- Vars
- P(c);::QAR1(A)
- S(b);N_GUARD,N_SPINS(f)::QAR1(A),XS(b)
- Refutation
- S(b);XQ(A)
- Try
- Actual
- R(F);XP(h)
- Threat
- S(G)
- Vars
- K(g);N_SPINS(f),S_FLIGHT,XR(F)::B(E)
- B(j);SBLOCK,XR(F)::S(G)
- P(c);::R1(F)
- R(a);N_GUARD::QAB(A)
- R(a);N_GUARD,P_PINS(G)::QAB(A)
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).