MESON Chess Problem Database
Problem Display
PID: 3128 (5BK1/8/8/r2P4/p1pk1P2/N3R3/2PN1PB1/2r5 w - - 0 1)
Way, WA
Source?, 1918
#2
10 + 5
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rxc2
- 2.Sxc2#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Rxd5
- 2.Sf3#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Ra1
- Tries
- 1.Kf7?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Ra7+!
- 1...Rxc2
- 1.Kh8?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Rh1+!
- 1...Rxc2
- 1.Sf1?
- 1...Rxf1
- 2.c3#
- 1...Rxc2
- 2.Sxc2#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Rxd5!
- 1...Rxf1
- 1.Sb3+?
- 1...cxb3
- 2.Rd3#
- 1...axb3!
- 1...cxb3
- 1.Sdxc4?
- threat
- 2.Rd3#
- 1...Rd1
- 2.c3#
- 1...Rxc2!
- threat
- 1.Bb4?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 2.Re4#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bc3#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Ra8+!
- 1...Rxc2
- 1.Bd6?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Be5#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Ra8+!
- 1...Rxc2
- 1.Be7?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bf6#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Ra8+!
- 1...Rxc2
- 1.Rg3?
- 1...Rxc2
- 2.Sxc2#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Rxd5!
- 1...Rxc2
- 1.Rh3?
- 1...Rxc2
- 2.Sxc2#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Rxd5!
- 1...Rxc2
- 1.f5?
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Sf3#
- 1...Ra1
- 2.c3#
- 1...Rb1
- 2.c3#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3!
- 1...Rxc2
- 1.Kf7?
- Keys
- 1.Sdb1!
- 1...Rxb1
- 2.c3#
- 1...Rxc2
- 2.Sxc2#
- 1...Rxd5
- 2.Re4#
- 1...Rd1
- 2.c3#
- 1...Re1
- 2.c3#
- 1...Rf1
- 2.c3#
- 1...Rg1
- 2.c3#
- 1...Rh1
- 2.c3#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.Bg7#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...c3
- 2.Rd3#
- 1...Rxb1
- 1.Sdb1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(a);XP(A)::S(E),XR(a)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);SBLOCK,XP(H)::S(B)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::S(B)
- R(a);N_GUARD::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::S(B)
- R(a);N_GUARD::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- S(B);
- Vars
- R(a);N_GUARD,XS(B)::P(A)
- R(a);XP(A)::S(E),XR(a)
- R(a);N_GUARD::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);XP(H)
- Try
- S(B);CHECK
- Vars
- P(c);XS(B)::R1(F)
- Refutation
- P(b);XS(B)
- Try
- S(B);XP(c)
- Threat
- R1(F)
- Vars
- R(a);N_GUARD::P(A)
- Refutation
- R(a);XP(A)
- Try
- B(I);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);CHECK
- Try
- B(I);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::S(B)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);CHECK
- Try
- B(I);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::S(B)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);CHECK
- Try
- R(F);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(a);N_GUARD::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);XP(H)
- Try
- R(F);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
- Refutation
- R(e);XP(H)
- Try
- P(G);
- Vars
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::S(B)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- Refutation
- P(c);
- Try
- Actual
- S(B);
- Vars
- R(a);N_GUARD,XS(B)::P(A)
- R(a);XP(A)::S(E),XR(a)
- R(e);SBLOCK,XP(H)::R1(F)
- R(a);N_GUARD::P(A)
- R(a);N_GUARD,P_PINB(D)::P(A)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::B(I)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,P_PINB(I)::S(E)
- P(c);N_GUARD::R1(F)
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).