MESON Chess Problem Database
Problem Display
PID: 21576 (8/5RB1/6n1/2RN4/1pp1kn2/2pr2p1/2Q3Pb/1B2KN2 w - - 0 1)
Blake, Percy Francis
Stratford Express, 1919
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Sxg3#
- 1...Se2
- 2.Qxe2#
- 1...Sxg2+
- 2.Qxg2#
- 1...Sh3
- 2.Qe2#
- 1...Sxd5
- 2.Rxc4#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se5
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sf8
- 2.Rxf4#
- 1...Sh8
- 2.Rxf4#
- 1...b3
- 2.Sxc3#
- 1...Bg1
- Tries
- 1.Bxc3?
- threat
- 2.Sd2#
- 2.Sf6#
- 1...Sxg2+
- 2.Qxg2#
- 1...Sxd5
- 2.Rxc4#
- 1...Se2
- 2.Sd2#
- 2.Qxe2#
- 1...Sh3
- 2.Sd2#
- 2.Qe2#
- 1...Sh5
- 2.Sd2#
- 2.Qe2#
- 1...Se6
- 2.Sd2#
- 2.Qe2#
- 1...Se5
- 2.Sd2#
- 2.Rxf4#
- 1...bxc3!
- threat
- 1.Bh8?
- 1...Sxg2+
- 2.Qxg2#
- 1...Sxd5
- 2.Rxc4#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Sh3
- 2.Qe2#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sf8
- 2.Rxf4#
- 1...b3
- 2.Sxc3#
- 1...Sxh8!
- 1...Sxg2+
- 1.Ra5?
- 1...Sxg2+
- 2.Qxg2#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Sh3
- 2.Qe2#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sf8
- 2.Rxf4#
- 1...Sh8
- 2.Rxf4#
- 1...b3
- 2.Sxc3#
- 1...Sxd5!
- 1...Sxg2+
- 1.Rb5?
- 1...Sxg2+
- 2.Qxg2#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Sh3
- 2.Qe2#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sf8
- 2.Rxf4#
- 1...Sh8
- 2.Rxf4#
- 1...b3
- 2.Sxc3#
- 1...Sxd5!
- 1...Sxg2+
- 1.Rf8?
- 1...Sxg2+
- 2.Qxg2#
- 1...Sxd5
- 2.Rxc4#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Sh3
- 2.Qe2#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sh8
- 2.Rxf4#
- 1...b3
- 2.Sxc3#
- 1...Sxf8!
- 1...Sxg2+
- 1.Qa2?
- threat
- 2.Qxc4#
- 1...Sxg2+
- 2.Qxg2#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Se6
- 2.Qe2#
- 1...b3
- 2.Sxc3#
- 1...c2!
- threat
- 1.Qd2?
- threat
- 2.Qe3#
- 1...Sxg2+
- 2.Qxg2#
- 1...cxd2+
- 2.Sxd2#
- 1...Sxd5
- 2.Rxc4#
- 1...Bg1
- 2.Sxg3#
- 1...c2!
- threat
- 1.Qf2?
- threat
- 2.Sf6#
- 2.Qe3#
- 2.Qd4#
- 2.Qf3#
- 1...Sxg2+
- 2.Qxg2#
- 1...Sxd5
- 2.Rxc4#
- 2.Qd4#
- 2.Qf3#
- 2.Qf5#
- 1...Se2
- 2.Sf6#
- 2.Qe3#
- 2.Qxe2#
- 2.Qf3#
- 2.Qf5#
- 1...Bg1
- 2.Sxg3#
- 2.Sf6#
- 2.Qf3#
- 1...Sh5
- 2.Qe3#
- 2.Qd4#
- 2.Qe2#
- 2.Qf3#
- 2.Qf5#
- 1...Se6
- 2.Sf6#
- 2.Qe3#
- 2.Qe2#
- 2.Qf3#
- 2.Qf5#
- 1...Sh4
- 2.Sf6#
- 2.Rxf4#
- 2.Qe3#
- 2.Qd4#
- 2.Qxf4#
- 1...Se5
- 2.Rxf4#
- 2.Qe3#
- 2.Qxf4#
- 1...c2
- 2.Sf6#
- 1...gxf2+!
- threat
- 1.Qxc3?
- threat
- 2.Sd2#
- 2.Sf6#
- 2.Qd4#
- 2.Qxc4#
- 1...Sxd5
- 2.Rxc4#
- 2.Qd4#
- 2.Qxc4#
- 1...bxc3
- 2.Sxc3#
- 1...Se2
- 2.Sd2#
- 1...Bg1
- 2.Sd2#
- 2.Sxg3#
- 2.Sf6#
- 1...Sh3
- 2.Sd2#
- 2.Qd4#
- 2.Qxc4#
- 1...Sh5
- 2.Sd2#
- 2.Qd4#
- 2.Qxc4#
- 1...Se6
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 2.Rxf4#
- 2.Qxe5#
- 1...Sxg2+!
- threat
- 1.Bxc3?
- Keys
- 1.Qb2!
- 1...Sxg2+
- 2.Qxg2#
- 1...Sxd5
- 2.Rxc4#
- 1...cxb2
- 2.Sd2#
- 1...Se5
- 2.Rxf4#
- 1...Se2
- 2.Qxe2#
- 1...Bg1
- 2.Sxg3#
- 1...Sh3
- 2.Qe2#
- 1...Sh5
- 2.Qe2#
- 1...Se6
- 2.Qe2#
- 1...Sh4
- 2.Rxf4#
- 1...Se7
- 2.Rxf4#
- 1...Sf8
- 2.Rxf4#
- 1...Sh8
- 2.Rxf4#
- 1...c2
- 2.Sf6#
- 1...b3
- 2.Sxc3#
- 1...Sxg2+
- 1.Qb2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D),XS(h)
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(h);N_GUARD::QAR2(D)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- S(i);N_GUARD::R1(H),XS(h)
- P(e);N_GUARD::S(G),XP(b)
- Tries
- Try
- B(I);XP(b)
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- Refutation
- P(e);XB(I)
- Try
- B(I);
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(e);N_GUARD::S(G),XP(b)
- Refutation
- S(i);XB(I)
- Try
- R(F);
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(e);N_GUARD::S(G),XP(b)
- Refutation
- S(h);XS(G)
- Try
- R(F);
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(e);N_GUARD::S(G),XP(b)
- Refutation
- S(h);XS(G)
- Try
- R(H);
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(e);N_GUARD::S(G),XP(b)
- Refutation
- S(i);XR(H)
- Try
- Q(D);
- Threat
- QAR2(D),XP(f)
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(e);N_GUARD::S(G),XP(b)
- Refutation
- P(b);N_SPINR(c)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- P(b);CHECK,XQ(D)::S(C),XP(b)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- B(a);N_GUARD::S(C),XP(d)
- Refutation
- P(b);N_SPINR(c)
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- P(b);N_SPINR(c)::S(G)
- Refutation
- P(d);CHECK,XQ(D)
- Try
- Q(D);XP(b)
- Threat
- DUALS(4)
- Vars
- P(e);XQ(D)::S(G),XP(e)
- S(h);::S(C)
- Refutation
- S(h);CHECK,XP(E)
- Try
- Actual
- Q(D);
- Vars
- S(h);CHECK,OGATE,XP(E)::QAB(D),XS(h)
- S(h);SBLOCK,XS(G)::R(F),XP(f)
- P(b);N_GUARD,XQ(D)::S(C)
- S(i);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::QAR2(D),XS(h)
- B(a);N_GUARD::S(C),XP(d)
- S(h);N_GUARD::QAR2(D)
- P(b);N_SPINR(c)::S(G)
- P(e);N_GUARD::S(G),XP(b)
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).