MESON Chess Problem Database
Problem Display
PID: 3014 (K7/8/5Q2/n7/3R4/N2pk1b1/6R1/8 w - - 0 1)
Williams, Philip Hamilton
Source?, 1916
#2
5 + 4
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Qf4#
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qf2#
- 1...Bf4
- 2.Qxf4#
- 1...Bh4
- 2.Qf4#
- 1...Be5
- 2.Qf2#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...d2
- 2.Sc2#
- 1...Be1
- Tries
- 1.Ra2?
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qf2#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bf2
- 2.Qxf2#
- 2.Qf4#
- 1...Bh2
- 2.Qf2#
- 1...Bh4
- 2.Qf4#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...d2!
- 1...Bf4
- 1.Rb2?
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qf2#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bf2
- 2.Qxf2#
- 2.Qf4#
- 1...Bh2
- 2.Qf2#
- 1...Bh4
- 2.Qf4#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...d2!
- 1...Bf4
- 1.Rd2?
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qf2#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bf2
- 2.Qxf2#
- 2.Qf4#
- 1...Bh2
- 2.Qf2#
- 1...Bh4
- 2.Qf4#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Kxd2!
- 1...Bf4
- 1.Re2+?
- 1...dxe2
- 2.Sc2#
- 1...Kxe2!
- 1...dxe2
- 1.Rh2?
- 1...Bf2
- 2.Qxf2#
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qf2#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bh4
- 2.Qf4#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...d2
- 2.Sc2#
- 1...Bxh2!
- 1...Bf2
- 1.Rh4?
- 1...Bf2
- 2.Qxf2#
- 1...Bf4
- 2.Qxf4#
- 1...d2
- 2.Qc3#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bh2
- 2.Qf2#
- 1...Be5
- 2.Qf2#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Bxh4!
- 1...Bf2
- 1.Qh4?
- threat
- 2.Qe4#
- 1...Kf3
- 2.Qxg3#
- 2.Qe4#
- 1...Bf2
- 2.Qxf2#
- 1...Bf4
- 2.Qf2#
- 2.Qxf4#
- 1...Bxh4!
- threat
- 1.Qe5+?
- 1...Kf3
- 2.Qxg3#
- 2.Qe4#
- 1...Bxe5!
- 1...Kf3
- 1.Qg5+?
- 1...Kf3
- 2.Qxg3#
- 1...Bf4
- 2.Qxf4#
- 1...Kxd4!
- 1...Kf3
- 1.Qf1?
- threat
- 2.Qxd3#
- 1...d2
- 2.Sc2#
- 2.Qd3#
- 1...Kxd4!
- threat
- 1.Qf5?
- threat
- 2.Rxd3#
- 2.Re4#
- 2.Qxd3#
- 2.Qe4#
- 1...Bf2
- 2.Qxd3#
- 2.Qxf2#
- 1...Bf4
- 2.Rxd3#
- 2.Qxd3#
- 2.Qe4#
- 2.Qxf4#
- 1...d2
- 2.Sc2#
- 2.Rd3#
- 2.Qd3#
- 2.Qe4#
- 1...Kxd4!
- threat
- 1.Qg6?
- threat
- 2.Qxd3#
- 2.Qe4#
- 1...Kf3
- 2.Qe4#
- 2.Qxg3#
- 1...Bf2
- 2.Qxd3#
- 1...d2
- 2.Qd3#
- 2.Qe4#
- 1...Kxd4!
- threat
- 1.Ra2?
- Keys
- 1.Rg4!
- 1...Bf2
- 2.Qxf2#
- 1...Bf4
- 2.Qxf4#
- 1...d2
- 2.Qc3#
- 1...Sb3
- 2.Sc4#
- 1...Be1
- 2.Qf4#
- 1...Bh2
- 2.Qf2#
- 1...Bh4
- 2.Qf4#
- 1...Be5
- 2.Qf2#
- 1...Bd6
- 2.Qf2#
- 1...Bc7
- 2.Qf2#
- 1...Bb8
- 2.Qf2#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Bf2
- 1.Rg4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(c);N_GUARD::QAB1(D)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- P(a);N_GUARD::S(B)
- Tries
- Try
- R(A);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XR(A)
- Try
- R(A);CHECK
- Vars
- P(a);SBLOCK,XR(A)::S(B)
- Refutation
- K(b);P-FLIGHT,XR(A)
- Try
- R(A);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- P(a);N_GUARD::S(B)
- Refutation
- B(c);XR(A)
- Try
- R(C);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- P(a);OGATEB::QAR2(D)
- S(d);N_GUARD::S(B)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- B(c);XR(C)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- B(c);OGATE::QAB1(D),XB(c)
- Refutation
- B(c);XQ(D)
- Try
- Q(D);CHECK
- Refutation
- B(c);XQ(D)
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D),XB(c)
- B(c);N_GUARD,P_SPINB(c)::QAB1(D),XB(c)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- Q(D);
- Threat
- QAR1(D),XP(a)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- Q(D);
- Threat
- DUALS(4)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(c);::QAR1(D),XP(a)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- Actual
- R(C);
- Vars
- B(c);N_GUARD::QAB1(D),XB(c)
- P(a);OGATEB::QAR2(D)
- S(d);N_GUARD::S(B)
- B(c);N_GUARD::QAB1(D)
- S(d);N_GUARD::S(B),XS(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).