MESON Chess Problem Database
Problem Display
PID: 137697 (4K1kr/4Pn1p/4R2P/pppB4/8/1n3PB1/q7/br4R1 w - - 0 1)
Lipton, Michael
The Problemist Supplement, 2010
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Se5
- 2.Rxe5#
- 2.Rg6#
- 1...Sg5
- 2.Rg6#
- 1...Sd6+
- 2.Rxd6#
- 1...Sxh6
- 2.Rg6#
- 1...Sd8
- 2.Rg6#
- 1...Se5
- Tries
- 1.Kd7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Se5+
- 2.Rxe5#
- 1...Rxg1
- 2.e8Q#
- 2.e8R#
- 1...Sxh6
- 2.Rg6#
- 1...Sd6
- 2.Rxd6#
- 2.Rg6#
- 1...Qb2
- 2.e8Q#
- 2.e8R#
- 1...Qc2
- 2.e8Q#
- 2.e8R#
- 1...Qd2
- 2.e8Q#
- 2.e8R#
- 1...Qe2
- 2.e8Q#
- 2.e8R#
- 1...Qf2
- 2.e8Q#
- 2.e8R#
- 1...Qg2
- 2.e8Q#
- 2.e8R#
- 1...Qh2
- 2.e8Q#
- 2.e8R#
- 1...Qa3
- 2.e8Q#
- 2.e8R#
- 1...Qa4
- 2.e8Q#
- 2.e8R#
- 1...Rc1
- 2.e8Q#
- 2.e8R#
- 1...Rd1
- 2.e8Q#
- 2.e8R#
- 1...Re1
- 2.e8Q#
- 2.e8R#
- 1...Rf1
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.e8Q#
- 2.e8R#
- 1...Bb2
- 2.e8Q#
- 2.e8R#
- 1...Bc3
- 2.e8Q#
- 2.e8R#
- 1...Bd4
- 2.e8Q#
- 2.e8R#
- 1...Be5
- 2.e8Q#
- 2.e8R#
- 1...Bf6
- 2.e8Q#
- 2.e8R#
- 1...Sc1
- 2.e8Q#
- 2.e8R#
- 1...Sd2
- 2.e8Q#
- 2.e8R#
- 1...Sd4
- 2.e8Q#
- 2.e8R#
- 1...a4
- 2.e8Q#
- 2.e8R#
- 1...b4
- 2.e8Q#
- 2.e8R#
- 1...c4
- 2.e8Q#
- 2.e8R#
- 1...Bg7!
- threat
- 1.Be1+?
- 1...Bg7
- 2.Rxg7#
- 1...Sg5
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 1...Qg2!
- 1...Bg7
- 1.Bf2+?
- 1...Bg7
- 2.Rxg7#
- 1...Sg5
- 2.Ree1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 1...Rxg1!
- 1...Bg7
- 1.Ree1?
- threat
- 2.Bxf7#
- 1...Sd2
- 2.Be5#
- 1...Sd4
- 2.Bf2#
- 1...Sc1!
- threat
- 1.Re2?
- threat
- 2.Bxf7#
- 1...Sc1
- 2.Be5#
- 1...Sd4
- 2.Be1#
- 1...Sd2!
- threat
- 1.Rf6?
- threat
- 2.Bxf7#
- 1...Sc1
- 2.Bf2#
- 1...Sd2
- 2.Be1#
- 1...Sd4!
- threat
- 1.Rg6+?
- 1...Bg7
- 2.Bxf7#
- 2.Rxg7#
- 1...hxg6!
- 1...Bg7
- 1.Kd7?
- Keys
- 1.Re5!
- threat
- 2.Bxf7#
- 1...Sc1
- 2.Bf2#
- 1...Sd2
- 2.Be1#
- 1...Sd4
- 2.Rg5#
- threat
- 1.Re5!
This is after
After M Niemeijer.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- S(h);::B(D)+R(E),DCHECK
- S(h);CHECK,OGATEB::B(D)+R(E),XS(h)
- S(h);XP(F)::B(D)+R(E),DCHECK
- Tries
- Try
- K(H);S_FLIGHT
- Threat
- P=Q
- Vars
- S(h);CHECK,OGATEB::B(D)+R(E),XS(h)
- R(b);XR(A)::P=Q
- S(h);XP(F)::B(D)+R(E),DCHECK
- Q(c);::P=Q
- Q(c);P_PINB(D)::P=Q
- R(b);::P=Q
- R(b);P_PINB(D)::P=Q
- B(a);::P=Q
- S(d);::P=Q
- P(e);::P=Q
- P(f);::P=Q
- P(g);::P=Q
- Refutation
- B(a);
- Try
- B(C);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::R1(A),XB(a)
- Refutation
- Q(c);P_SPINQ(c)
- Try
- B(C);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::R1(A),XB(a)
- Refutation
- R(b);XR(A)
- Try
- R(E);P_PINS(h)
- Threat
- B(D),XS(h)
- Vars
- S(d);S_CUTQ(c)::R(A)+B(C)
- S(d);S_CUTB(a)::R(A)+B(C)
- Refutation
- S(d);
- Try
- R(E);P_PINS(h)
- Threat
- B(D),XS(h)
- Vars
- S(d);S_CUTR(b)::R(A)+B(C)
- S(d);S_CUTB(a)::R(A)+B(C)
- Refutation
- S(d);
- Try
- R(E);P_PINS(h)
- Threat
- B(D),XS(h)
- Vars
- S(d);S_CUTR(b)::R(A)+B(C)
- S(d);S_CUTQ(c)::R(A)+B(C)
- Refutation
- S(d);
- Try
- R(E);CHECK,P_PINS(h)
- Refutation
- P(i);XR(E)
- Try
- Actual
- R(E);P_PINS(h)
- Threat
- B(D),XS(h)
- Vars
- S(d);S_CUTR(b)::R(A)+B(C)
- S(d);S_CUTQ(c)::R(A)+B(C)
- S(d);S_CUTB(a)::R(E)
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).