MESON Chess Problem Database
Problem Display
PID: 271486 (K2Q4/p1p1NRn1/7q/r3kP2/1R2n1p1/1p6/1b4rN/2BB4 w - - 0 1)
Hawes, Frederick Thomas
Ravenscroft, Frank
The Problemist, 1956
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxc1
- 2.Sg6#
- 1...Qd2
- 2.Sg6#
- 1...Qe3
- 2.Sg6#
- 1...Qf4
- 2.Sc6#
- 2.Sg6#
- 1...Qg5
- 2.Sc6#
- 1...Qxh2
- 2.Sc6#
- 2.Sg6#
- 1...Qh3
- 2.Sc6#
- 2.Sg6#
- 1...Qh4
- 2.Sc6#
- 2.Sg6#
- 1...Qh5
- 2.Sc6#
- 1...Qc6+
- 2.Sxc6#
- 1...Qg6
- 2.Sxg6#
- 1...Qh7
- 2.Sc6#
- 1...Qh8
- 2.Sc6#
- 2.Sg6#
- 1...Rc2
- 2.Sxg4#
- 1...Re2
- 2.Sxg4#
- 1...Rf2
- 2.Sxg4#
- 1...Ra1
- 2.Qd5#
- 1...Ra2
- 2.Qd5#
- 1...Ra3
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 1...Ra6
- 2.Qd5#
- 1...Ba3
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sd2
- 2.Bxb2#
- 1...Sf2
- 2.Bxb2#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Sxg4#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Bf4#
- 1...Sf6
- 2.Qxc7#
- 1...Se6
- 2.Sc6#
- 1...g3
- 2.Sf3#
- 2.Sg4#
- 1...c5
- 2.Qd5#
- 1...Qxc1
- Tries
- 1.Bf4+?
- 1...Qxf4
- 2.Sc6#
- 2.Sg6#
- 1...Kxf4!
- 1...Qxf4
- 1.Bxh6?
- threat
- 2.Sc6#
- 2.Sg6#
- 1...Rc2
- 2.Sxg4#
- 2.Sg6#
- 1...Rc5
- 2.Sg6#
- 1...Ra6
- 2.Qd5#
- 1...Sd6
- 2.Bf4#
- 2.Bxg7#
- 1...Sf6
- 2.Bf4#
- 2.Qxc7#
- 1...c6
- 2.Sxc6#
- 2.Sg6#
- 1...Sxf5!
- threat
- 1.Bc2?
- threat
- 2.Rxe4#
- 1...Qc6+
- 2.Sxc6#
- 1...Rxc2
- 2.Sxg4#
- 1...Qe3
- 2.Sg6#
- 1...Qf4
- 2.Sc6#
- 2.Sg6#
- 1...Re2
- 2.Sxg4#
- 1...Ra4
- 2.Qd5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd2
- 2.Bxb2#
- 1...Sf2
- 2.Bxb2#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Sxg4#
- 2.Bxb2#
- 1...Sc5
- 2.Bxb2#
- 2.Qd5#
- 1...Sg5
- 2.Bxb2#
- 2.Bf4#
- 1...Sd6
- 2.Bxb2#
- 1...Sf6
- 2.Sc6#
- 2.Bxb2#
- 2.Qxc7#
- 1...bxc2!
- threat
- 1.Rb5+?
- 1...Sc5
- 2.Qd5#
- 1...c5
- 2.Qd5#
- 1...Rxb5!
- 1...Sc5
- 1.Qd3?
- threat
- 2.Rxe4#
- 1...Qc6+
- 2.Sxc6#
- 1...Qe3
- 2.Sg6#
- 1...Rd5
- 2.Qxd5#
- 1...Bd4
- 2.Qxd4#
- 1...Qf4
- 2.Sc6#
- 2.Sg6#
- 1...Re2
- 2.Sxg4#
- 1...Ra4
- 2.Qd5#
- 1...Sd2
- 2.Bxb2#
- 1...Sf2
- 2.Bxb2#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Sxg4#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Bf4#
- 1...Sd6
- 2.Sc6#
- 1...Sf6
- 2.Sc6#
- 1...Qh8+!
- threat
- 1.Bf4+?
- Keys
- 1.Bf3!
- threat
- 2.Rxe4#
- 1...Qc6+
- 2.Sxc6#
- 1...gxf3
- 2.Sxf3#
- 1...Qe3
- 2.Sg6#
- 1...Qf4
- 2.Sc6#
- 2.Sg6#
- 1...Re2
- 2.Sxg4#
- 1...Ra4
- 2.Qd5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd2
- 2.Bxb2#
- 1...Sf2
- 2.Bxb2#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Sxg4#
- 1...Sc5
- 2.Qd5#
- 1...Sg5
- 2.Bf4#
- 1...Sd6
- 2.Sc6#
- 1...Sf6
- 2.Qxc7#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 16
- Sets
- Q(h);N_GUARD,XB(A)::S(F)
- Q(h);N_GUARD::S(F)
- Q(h);CHECK,N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::S(F),XQ(h)
- R(b);N_GUARD::S(C),XP(e)
- R(f);N_GUARD::QAR1(I)
- R(f);N_GUARD::QAR1(I),XR(f)
- B(a);N_GUARD::QAB1(I)
- B(a);N_GUARD::QAB1(I),XB(a)
- S(d);N_GUARD,S_CUTR(b)::B(A),XB(a)
- S(d);S_CUTB(a)::QAB1(I)
- S(d);S_CUTR(b)::S(C),XP(e)
- S(d);S_CUTR(f)::QAR1(I)
- S(d);S_CUTQ(h)::B(A)
- S(d);N_GUARD,S_CUTQ(h)::QAB(I),XP(j)
- S(k);S_CUTQ(h)::S(F)
- P(j);S_CUTR(f)::QAR1(I)
- Tries
- Try
- B(A);CHECK
- Refutation
- K(g);P_SPINS(d),S_FLIGHT,XB(A)
- Try
- B(A);XQ(h)
- Threat
- DUALS(2)
- Vars
- R(f);::S(F)
- R(f);N_GUARD::QAR1(I)
- Refutation
- S(k);XP(E)
- Try
- B(B);
- Threat
- R1(D),XS(d)
- Vars
- Q(h);CHECK,N_GUARD::S(F),XQ(h)
- R(b);N_GUARD,XB(B)::S(C),XP(e)
- Q(h);N_GUARD::S(F)
- R(b);N_GUARD::S(C),XP(e)
- R(f);N_GUARD::QAR1(I)
- B(a);N_GUARD::QAB1(I),XB(a)
- S(d);N_GUARD::B(A),XB(a)
- S(d);S_CUTB(a)::QAB1(I)
- Refutation
- P(c);XB(B)
- Try
- R(D);CHECK
- Vars
- S(d);P_SPINS(d)::QAR1(I)
- P(j);P_SPINP(j)::QAR1(I)
- Refutation
- R(f);XR(D)
- Try
- Q(I);
- Threat
- R1(D),XS(d)
- Vars
- Q(h);CHECK,N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::S(F)
- R(f);N_GUARD::QAR1(I),XR(f)
- B(a);N_GUARD::QAB1(I),XB(a)
- R(b);N_GUARD::S(C),XP(e)
- R(f);N_GUARD::QAR1(I)
- S(d);N_GUARD,S_CUTR(b)::B(A),XB(a)
- S(d);S_CUTB(a)::QAB1(I)
- S(d);S_CUTR(b)::S(C),XP(e)
- S(d);S_CUTR(f)::QAR1(I)
- S(d);S_CUTQ(h)::B(A)
- S(d);S_CUTQ(h)::S(F)
- Refutation
- Q(h);CHECK
- Try
- Actual
- B(B);
- Threat
- R1(D),XS(d)
- Vars
- Q(h);CHECK,N_GUARD::S(F),XQ(h)
- P(e);XB(B)::S(C),XP(e)
- Q(h);N_GUARD::S(F)
- R(b);N_GUARD::S(C),XP(e)
- R(f);N_GUARD::QAR1(I)
- B(a);N_GUARD::QAB1(I),XB(a)
- S(d);N_GUARD,S_CUTR(b)::B(A),XB(a)
- S(d);S_CUTB(a)::QAB1(I)
- S(d);S_CUTR(b)::S(C),XP(e)
- S(d);S_CUTR(f)::QAR1(I)
- S(d);S_CUTQ(h)::B(A)
- S(d);S_CUTQ(h)::S(F)
- S(d);N_GUARD,S_CUTQ(h)::QAB(I),XP(j)
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).