MESON Chess Problem Database
Problem Display
PID: 2975 (8/p4N2/K4R2/6p1/4k1rb/3R3Q/2PPb3/3n4 w - - 0 1)
Bolus, Andrew
Source?, 1915
#2
7 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qf5#
- 2.Qe6#
- 1...Rg2
- 2.Qf5#
- 2.Qe6#
- 1...Rg3
- 2.Qf5#
- 2.Qe6#
- 1...Rf4
- 2.Re6#
- 2.Qe6#
- 1...Bf1
- 2.Qxg4#
- 2.Qf3#
- 1...Bxd3+
- 2.Qxd3#
- 1...Bf3
- 2.Qxf3#
- 1...Be1
- 2.Qh7#
- 1...Bf2
- 2.Qh7#
- 1...Bg3
- 2.Qh7#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Rg1
- Tries
- 1.Ka5?
- 1...Bxd3
- 2.Qxd3#
- 1...Rg1
- 2.Qf5#
- 2.Qe6#
- 1...Rg2
- 2.Qf5#
- 2.Qe6#
- 1...Rg3
- 2.Qf5#
- 2.Qe6#
- 1...Rf4
- 2.Re6#
- 2.Qe6#
- 1...Bf1
- 2.Qxg4#
- 2.Qf3#
- 1...Bf3
- 2.Qxf3#
- 1...Be1
- 2.Qh7#
- 1...Bf2
- 2.Qh7#
- 1...Bg3
- 2.Qh7#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...a6!
- 1...Bxd3
- 1.Kxa7?
- 1...Bxd3
- 2.Qxd3#
- 1...Rg1
- 2.Qf5#
- 2.Qe6#
- 1...Rg2
- 2.Qf5#
- 2.Qe6#
- 1...Rg3
- 2.Qf5#
- 2.Qe6#
- 1...Rf4
- 2.Re6#
- 2.Qe6#
- 1...Bf1
- 2.Qxg4#
- 2.Qf3#
- 1...Bf3
- 2.Qxf3#
- 1...Be1
- 2.Qh7#
- 1...Bg3
- 2.Qh7#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Bf2+!
- 1...Bxd3
- 1.Qg2+?
- 1...Bf3
- 2.Qxf3#
- 1...Rxg2!
- 1...Bf3
- 1.Qh1+?
- 1...Bf3
- 2.Qxf3#
- 1...Rg2!
- 1...Bf3
- 1.c3?
- 1...Sxc3
- 2.Qe3#
- 1...Rg3
- 2.Qf5#
- 1...Bf3
- 2.Rd4#
- 2.Qxf3#
- 1...Bg3
- 2.Qh7#
- 1...Se3
- 2.Qxe3#
- 1...Rg1
- 2.Qf5#
- 1...Rg2
- 2.Qf5#
- 1...Rf4
- 2.Re6#
- 1...Bf1
- 2.Qf3#
- 1...Be1
- 2.Qh7#
- 1...Bf2
- 2.Qh7#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Bxd3+!
- 1...Sxc3
- 1.Ka5?
- Keys
- 1.c4!
- 1...Bxd3
- 2.Qxg4#
- 1...Rg3
- 2.Qf5#
- 1...Bf3
- 2.Qxf3#
- 1...Bg3
- 2.Qh7#
- 1...Se3
- 2.Qxe3#
- 1...Rg1
- 2.Qf5#
- 1...Rg2
- 2.Qf5#
- 1...Rf4
- 2.Re6#
- 1...Bf1
- 2.Qf3#
- 1...Be1
- 2.Qh7#
- 1...Bf2
- 2.Qh7#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Bxd3
- 1.c4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(b);CHECK,OGATE,XR(C)::QAB1(D),XB(b)
- B(b);N_GUARD,N_PINR(C)::QAB1(D),XB(b)
- B(e);OGATE::QAB(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- Tries
- Try
- K(E);N_SPINR(C),P-FLIGHT
- Vars
- B(b);OGATE,XR(C)::QAB1(D),XB(b)
- B(b);N_GUARD::QAB1(D),XB(b)
- B(e);OGATE,P_PINP(B)::QAB(D)
- B(e);OGATE::QAB(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- Refutation
- P(g);
- Try
- K(E);N_SPINR(C),P-FLIGHT,XP(g)
- Vars
- B(b);OGATE,XR(C)::QAB1(D),XB(b)
- B(b);N_GUARD::QAB1(D),XB(b)
- B(e);OGATE::QAB(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- Refutation
- B(e);CHECK
- Try
- Q(D);CHECK
- Vars
- B(b);N_GUARD,N_PINR(C),P_SPINB(b)::QAB1(D),XB(b)
- Refutation
- R(d);XQ(D)
- Try
- Q(D);CHECK
- Vars
- B(b);N_GUARD,N_PINR(C),P_SPINB(b)::QAB1(D),XB(b)
- Refutation
- R(d);P_SPINR(d)
- Try
- P(A);
- Vars
- S(a);N_GUARD,XP(A)::QAR1(D)
- R(d);OGATE::QAB1(D)
- B(e);OGATE::QAB(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- R(d);SBLOCK::R(F)
- B(b);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAR1(D)
- Refutation
- B(b);CHECK,XR(C)
- Try
- Actual
- P(A);N_SPINR(C)
- Vars
- B(b);N_GUARD,P_PINP(A),SBLOCK,XR(C)::QAR2(D),XR(d)
- R(d);OGATE::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- B(e);OGATE::QAB(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- R(d);SBLOCK::R(F)
- B(b);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAR1(D)
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).