MESON Chess Problem Database
Problem Display
PID: 3019 (4K3/4N3/2p4b/1pP1p3/1Rq1kp2/R6N/2P1p3/1Q4B1 w - - 0 1)
Bernard, Henry D'Oyly
Williams, Philip Hamilton
Source?, 1917
#2
9 + 8
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Qxb4#
- 1...Qd4
- 2.Sf2#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...f3
- 2.c3#
- 1...Qxb4
- Tries
- 1.Kd7?
- 1...Qxb4
- 2.Qxb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...f3
- 2.c3#
- 1...Qd4+!
- 1...Qxb4
- 1.Kd8?
- 1...Qxb4
- 2.Qxb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...f3
- 2.c3#
- 1...Qd4+!
- 1...Qxb4
- 1.Bf2?
- 1...Qxb4
- 2.Qxb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...f3
- 2.c3#
- 1...Qd4!
- 1...Qxb4
- 1.Rc3?
- 1...Qxb4
- 2.Qxb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Sf2#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...f3!
- 1...Qxb4
- 1.Rd3?
- threat
- 2.Sf2#
- 1...e1Q
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...f3!
- threat
- 1.Rg3?
- threat
- 2.c3#
- 1...Qxb4
- 2.Qxb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...fxg3!
- threat
- 1.Qa1?
- threat
- 2.Sf2#
- 1...e1Q
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...f3!
- threat
- 1.Qb3?
- threat
- 2.Qd3#
- 2.Qf3#
- 1...f3
- 2.Qd3#
- 2.Qxf3#
- 1...e1S!
- threat
- 1.Kd7?
- Keys
- 1.Rab3!
- 1...Qxb4
- 2.c4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Sf2#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bf8
- 2.Sg5#
- 1...f3
- 2.c3#
- 1...Qxb4
- 1.Rab3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- Q(b);::S(E)
- B(h);N_GUARD::S(E),XB(h)
- B(h);N_GUARD::S(E)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(d);SBLOCK::QAB(A)+P(C)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(h);N_GUARD::S(E),XB(h)
- B(h);N_GUARD::S(E)
- P(d);SBLOCK::QAB(A)+P(C)
- Refutation
- Q(b);CHECK
- Try
- K(I);P-FLIGHT
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(h);N_GUARD,P_PINS(H)::S(E),XB(h)
- B(h);N_GUARD::S(E)
- P(d);SBLOCK::QAB(A)+P(C)
- Refutation
- Q(b);CHECK
- Try
- B(B);
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(h);N_GUARD::S(E),XB(h)
- B(h);N_GUARD::S(E)
- P(d);SBLOCK::QAB(A)+P(C)
- Refutation
- Q(b);
- Try
- R(D);
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- Q(b);::S(E)
- B(h);N_GUARD::S(E),XB(h)
- B(h);N_GUARD::S(E)
- Refutation
- P(d);
- Try
- R(D);
- Threat
- S(E)
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XB(a)
- Refutation
- P(d);
- Try
- R(D);
- Threat
- QAB(A)+P(C)
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAR(A),XQ(b)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XR(a)
- Refutation
- P(d);XR(D)
- Try
- Q(A);
- Threat
- S(E)
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XB(a)
- Refutation
- P(d);
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- P(a);
- Try
- Actual
- R(D);
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(F)::QAB(A)+P(C)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- Q(b);::S(E)
- B(h);N_GUARD::S(E),XB(h)
- B(h);N_GUARD::S(E)
- P(d);SBLOCK::QAB(A)+P(C)
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).