MESON Chess Problem Database
Problem Display
PID: 65354 (6Qn/3NBn1p/2pP2pr/5PPp/2r1k2P/4p1KB/4N3/3R4 w - - 0 1)
Brotherton, David WA
The Problemist, 2006
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...Sd8
- 2.Qxc4#
- 1...c5
- 2.Qa8#
- 1...gxf5
- 2.Bg2#
- 1...Rc1
- Tries
- 1.Sc5+?
- 1...Ke5
- 2.Bf6#
- 2.Qg7#
- 1...Rxc5!
- 1...Ke5
- 1.Bg4?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...gxf5
- 2.Bf3#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sd8
- 2.Qxc4#
- 1...c5
- 2.Qa8#
- 1...hxg4!
- 1...Sxg5
- 1.Bf6?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 2.Sc5#
- 1...Rb4
- 2.Sc3#
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 1...Sd8
- 2.Qxc4#
- 1...c5
- 2.Qa8#
- 1...Se5!
- 1...Sxg5
- 1.Bd8?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...Sxd8
- 2.Qxc4#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...c5!
- 1...Sxg5
- 1.Bf8?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sd8
- 2.Qxc4#
- 1...c5!
- 1...Sxg5
- 1.Rd2?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sd8
- 2.Qxc4#
- 1...exd2!
- 1...Sxg5
- 1.Qxf7?
- threat
- 2.Bg2#
- 2.Qxc4#
- 2.Qe6#
- 1...gxf5
- 2.Bg2#
- 2.Bxf5#
- 2.Qxc4#
- 2.Qxf5#
- 1...Rc1
- 2.Bg2#
- 2.Rd4#
- 2.Qe6#
- 1...Rc2
- 2.Bg2#
- 2.Rd4#
- 2.Qe6#
- 1...Rc3
- 2.Sxc3#
- 2.Bg2#
- 2.Rd4#
- 2.Qe6#
- 1...Ra4
- 2.Sc3#
- 2.Bg2#
- 2.Qe6#
- 1...Rb4
- 2.Sc3#
- 2.Bg2#
- 2.Qe6#
- 1...Rd4
- 2.Sc3#
- 2.Bg2#
- 2.Rxd4#
- 2.Qe6#
- 1...Rc5
- 2.Bg2#
- 2.Rd4#
- 1...Sxf7!
- threat
- 1.Qg7?
- 1...Sxg5
- 2.Qe5#
- 1...Sxd6
- 2.Qe5#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Rc1
- 2.Rd4#
- 2.Qd4#
- 1...Rc2
- 2.Rd4#
- 2.Qd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 2.Qd4#
- 1...Ra4
- 2.Sc3#
- 2.Sc5#
- 1...Rb4
- 2.Sc3#
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 2.Qd4#
- 1...Se5
- 2.Sf6#
- 2.Qxe5#
- 1...Sd8
- 2.Qe5#
- 1...c5!
- 1...Sxg5
- 1.Qf8?
- 1...Sxd6
- 2.Bg2#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sd8
- 2.Bg2#
- 1...Sxg5!
- 1...Sxd6
- 1.Qxh8?
- 1...Sxg5
- 2.Qe5#
- 1...Sxd6
- 2.Qe5#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 2.Qxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 2.Qd4#
- 1...Rc2
- 2.Rd4#
- 2.Qd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 2.Qd4#
- 1...Ra4
- 2.Sc3#
- 2.Sc5#
- 1...Rb4
- 2.Sc3#
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 2.Qd4#
- 1...Se5
- 2.Sf6#
- 2.Qxe5#
- 1...Sd8
- 2.Qe5#
- 1...Sxh8!
- 1...Sxg5
- 1.f6?
- 1...Sxg5
- 2.Qxc4#
- 1...Sxd6
- 2.Qe6#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Sd8
- 2.Qxc4#
- 1...Se5!
- 1...Sxg5
- 1.gxh6?
- 1...Sxd6
- 2.Qe6#
- 1...Sxh6
- 2.Qxc4#
- 2.Qe6#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sg5
- 2.Qxc4#
- 1...Sd8
- 2.Qxc4#
- 1...g5!
- 1...Sxd6
- 1.Sc5+?
- Keys
- 1.Qe8!
- 1...Sxg5
- 2.Bxg5#
- 1...Sxd6
- 2.Bxd6#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 1...c5
- 2.Qa8#
- 1...Rc1
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Rc3
- 2.Sxc3#
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rc5
- 2.Rd4#
- 1...Se5
- 2.Sf6#
- 1...Sd8
- 2.Bxd8#
- 1...Sxg5
- 1.Qe8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- S(h);OGATE::QAR2(K),XR(b)
- P(e);OGATEB::QAB(K)
- P(f);SBLOCK,XP(F)::B(D)
- Tries
- Try
- S(I);CHECK
- Refutation
- R(b);XS(I)
- Try
- B(D);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- P(f);SBLOCK,XP(F)::B(D)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);OGATE::QAR2(K),XR(b)
- P(e);OGATEB::QAB(K)
- Refutation
- P(d);XB(D)
- Try
- B(J);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- P(f);SBLOCK,XP(F)::B(D)
- R(b);N_GUARD::R1(A)
- S(h);OGATE::QAR2(K),XR(b)
- P(e);OGATEB::QAB(K)
- Refutation
- S(h);
- Try
- B(J);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- S(h);OGATE,XB(J)::QAR2(K),XR(b)
- P(f);SBLOCK,XP(F)::B(D)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- P(f);SBLOCK,XP(F)::B(D)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);OGATE::QAR2(K),XR(b)
- Refutation
- P(e);
- Try
- R(A);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- P(f);SBLOCK,XP(F)::B(D)
- P(e);OGATEB::QAB(K)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);OGATE::QAR2(K),XR(b)
- Refutation
- P(a);XR(A)
- Try
- Q(K);XS(h)
- Threat
- DUALS(3)
- Refutation
- S(j);XQ(K)
- Try
- Q(K);
- Vars
- S(h);N_GUARD,XP(G)::QAR1(K)
- S(h);N_GUARD,XP(H)::QAR1(K)
- P(f);SBLOCK,XP(F)::B(D)
- S(h);N_GUARD::QAR1(K)
- Refutation
- P(e);
- Try
- Q(K);
- Vars
- S(h);XP(H)::B(D)
- P(f);SBLOCK,XP(F)::B(D)
- P(e);OGATEB::QAB(K)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);::B(D)
- Refutation
- S(h);XP(G)
- Try
- Q(K);XS(j)
- Vars
- S(h);N_GUARD,XP(G)::QAR1(K)
- S(h);N_GUARD,XP(H)::QAR1(K)
- P(f);SBLOCK,XP(F)::B(D)
- P(e);OGATEB::QAB(K)
- S(h);N_GUARD::QAR1(K)
- Refutation
- S(h);XQ(K)
- Try
- P(F);
- Vars
- S(h);OGATE,XP(G)::QAR2(K),XR(b)
- S(h);OGATE,XP(H)::QAR2(K)
- P(e);OGATEB::QAB(K)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);OGATE::QAR2(K),XR(b)
- Refutation
- S(h);
- Try
- P(G);XR(g)
- Vars
- S(h);OGATE,XP(H)::QAR2(K)
- P(f);SBLOCK,XP(F)::B(D)
- P(e);OGATEB::QAB(K)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);OGATE::QAR2(K),XR(b)
- Refutation
- P(f);
- Try
- Actual
- Q(K);
- Vars
- S(h);OGATE,XP(G)::QAR(K)+B(J),XS(h)
- S(h);OGATE,XP(H)::QAR(K)+B(J),XS(h)
- P(f);SBLOCK,XP(F)::B(D)
- P(e);OGATEB::QAB(K)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::S(B)
- S(h);SBLOCK::S(I)
- S(h);N_GUARD::QAR(K)+B(J),XS(h)
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).