MESON Chess Problem Database
Problem Display
PID: 16361 (8/3N4/2P1RPn1/1PPk1b2/2p3p1/3pP1K1/Q7/1B6 w - - 0 1)
Rudd, Charles Dember
Chess, 1940
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxe6
- 2.Qxc4#
- 1...Be4
- 2.Rd6#
- 1...Bxe6
- 2.Qg2#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6
- Tries
- 1.Kh2?
- 1...Kxe6
- 2.Qxc4#
- 1...Bxe6
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...g3+!
- 1...Kxe6
- 1.Bxd3?
- threat
- 2.Bxc4#
- 2.Rd6#
- 2.Qxc4#
- 1...Kxe6
- 2.Bxc4#
- 2.Qxc4#
- 1...Bxe6
- 2.Qxc4#
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 2.Rd6#
- 1...Bxd3!
- threat
- 1.Qa1?
- 1...Bxe6
- 2.Qd4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 2.Qe5#
- 1...Sh4
- 2.Re5#
- 2.Qe5#
- 1...Se7
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...Sh8
- 2.Re5#
- 2.Qe5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Qb2?
- 1...Bxe6
- 2.Qd4#
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 2.Qb3#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 2.Qe5#
- 1...Sh4
- 2.Re5#
- 2.Qe5#
- 1...Se7
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...Sh8
- 2.Re5#
- 2.Qe5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Qc2?
- 1...Kxe6
- 2.Qxc4#
- 1...Bxe6
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qb3#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...dxc2!
- 1...Kxe6
- 1.Qd2?
- 1...Bxe6
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Kxe6!
- 1...Bxe6
- 1.Qe2?
- 1...Bxe6
- 2.Qg2#
- 1...dxe2
- 2.Rd6#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Qf2?
- 1...Bxe6
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 2.Qxf5#
- 1...Sh8
- 2.Re5#
- 2.Qxf5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Qg2+?
- 1...Be4
- 2.Rd6#
- 2.Qxe4#
- 1...Kxe6!
- 1...Be4
- 1.Qh2?
- 1...Bxe6
- 2.Qh1#
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Qa4?
- 1...Kxe6
- 2.Qxc4#
- 1...Se5
- 2.Rxe5#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...c3
- 2.Ba2#
- 2.Rd6#
- 2.Qb3#
- 2.Qa2#
- 1...Bxe6!
- 1...Kxe6
- 1.e4+?
- 1...Kxe6
- 2.Qxc4#
- 1...Bxe4
- 2.Rd6#
- 1...Kd4!
- 1...Kxe6
- 1.c7?
- 1...Bxe6
- 2.Qg2#
- 2.Qa8#
- 1...Se5
- 2.Rxe5#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.f7?
- 1...Bxe6
- 2.Qg2#
- 1...Se5
- 2.Rxe5#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6!
- 1...Bxe6
- 1.Kh2?
- Keys
- 1.Qa8!
- 1...Kxe6
- 2.Qg8#
- 1...Bxe6
- 2.c7#
- 1...Se5
- 2.Rxe5#
- 1...c3
- 2.Ba2#
- 2.Qa2#
- 1...Be4
- 2.Rd6#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...d2
- 2.Rd6#
- 1...Kxe6
- 1.Qa8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(d);S_FLIGHT,XR(H)::QAB(B),XP(b)
- B(e);SBLOCK::R1(H)
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- P(a);::R1(H)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- K(d);S_FLIGHT,XR(H)::QAB(B),XP(b)
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- P(c);CHECK
- Try
- B(A);XP(a)
- Threat
- DUALS(3)
- Refutation
- B(e);XB(A)
- Try
- Q(B);N_PINP(b)
- Vars
- B(e);SBLOCK,XR(H)::QAR1(B)
- B(e);SBLOCK::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- B(e);SBLOCK::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- K(d);S_FLIGHT,XR(H)::QAB(B),XP(b)
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- P(a);XQ(B)
- Try
- Q(B);N_PINP(b),P_PINP(a)
- Vars
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- Refutation
- K(d);N_SPINP(a),S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- P(a);XQ(B)::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);CHECK,N_PINP(b)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(B);N_PINP(b)
- Vars
- K(d);S_FLIGHT,XR(H)::QAB(B),XP(b)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- B(e);XR(H)
- Try
- P(C);CHECK
- Vars
- K(d);S_FLIGHT,XR(H)::QAB(B),XP(b)
- B(e);SBLOCK,XP(C)::R1(H)
- Refutation
- K(d);N_SPINP(b),P-FLIGHT
- Try
- P(G);
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- P(I);
- Vars
- B(e);N_GUARD,SBLOCK,XR(H)::QAB(B)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Actual
- Q(B);N_PINP(b)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(H)::QAB(B)
- B(e);SBLOCK,XR(H)::QAB(B)+P(G)
- S(f);N_GUARD::R1(H),XS(f)
- B(e);SBLOCK::R1(H)
- S(f);N_GUARD::R1(H)
- P(a);::R1(H)
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).