MESON Chess Problem Database
Problem Display
PID: 10075 (4Q3/2Kp1p2/1P1N1P1b/p2k3r/P3p2r/n3p2b/4P3/BRRB1N2 w - - 0 1)
Mansfield, Comins
1st HM., The Problemist, 1961
#2
12 + 11
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bxf1
- 2.Qxf7#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Be6
- 2.Qa8#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sxb1
- 2.Bb3#
- 1...Sc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Sb5+
- 2.Rxb5#
- 1...Rf4
- Tries
- 1.Rb4?
- threat
- 2.Rd4#
- 1...Sb5+
- 2.Rxb5#
- 1...Sc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Be6
- 2.Qa8#
- 1...axb4!
- threat
- 1.Rc2?
- 1...Sb5+
- 2.Rxb5#
- 1...Bxf1
- 2.Qxf7#
- 1...Sxc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Be6
- 2.Qa8#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sxb1!
- 1...Sb5+
- 1.Rc4?
- 1...Sb5+
- 2.Rxb5#
- 1...Bxf1
- 2.Qxf7#
- 1...Sxc4
- 2.Rb5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Be6
- 2.Qa8#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sc2
- 2.Rb5#
- 1...Sxb1!
- 1...Sb5+
- 1.Qe7?
- 1...Sb5+
- 2.Rxb5#
- 1...Bxf1
- 2.Qxf7#
- 1...Sxb1
- 2.Bb3#
- 1...Sc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Be6!
- 1...Sb5+
- 1.b7?
- 1...Sb5+
- 2.Rxb5#
- 1...Bxf1
- 2.Qxf7#
- 1...Sxb1
- 2.Bb3#
- 1...Sc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Be6!
- 1...Sb5+
- 1.Rb4?
- Keys
- 1.Rb3!
- 1...Sb5+
- 2.Rxb5#
- 1...Bxf1
- 2.Qxf7#
- 1...Sc2
- 2.Rb5#
- 1...Sc4
- 2.Rb5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Qxf7#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qxf7#
- 1...Rg5
- 2.Sxe3#
- 1...Bg2
- 2.Qxf7#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qe5#
- 1...Be6
- 2.Qa8#
- 1...Bf4
- 2.Qxe4#
- 1...Bg5
- 2.Qe5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sb1
- 2.Rb5#
- 1...Sb5+
- 1.Rb3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(c);SBLOCK::QAB(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
- S(a);N_GUARD,XR(B)::B(D)
- S(a);N_GUARD::R(B)
- S(a);CHECK,N_GUARD::R(B),XS(a)
- Tries
- Try
- R(B);
- Threat
- R1(B)
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- B(c);SBLOCK::QAB(L)
- Refutation
- P(f);XR(B)
- Try
- R(C);
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- S(a);N_GUARD,XR(C)::R(B)
- S(a);N_GUARD::R(B)
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(c);SBLOCK::QAB(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
- Refutation
- S(a);XR(B)
- Try
- R(C);
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- S(a);N_GUARD,XR(C)::R(B)
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(c);SBLOCK::QAB(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
- S(a);N_GUARD::R(B)
- Refutation
- S(a);XR(B)
- Try
- Q(L);
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- S(a);N_GUARD,XR(B)::B(D)
- S(a);N_GUARD::R(B)
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
- Refutation
- B(c);
- Try
- P(H);
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- S(a);N_GUARD,XR(B)::B(D)
- S(a);N_GUARD::R(B)
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
- Refutation
- B(c);
- Try
- Actual
- R(B);
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- B(c);N_GUARD,XS(E)::QAB(L),XP(k)
- S(a);N_GUARD::R(B)
- R(e);S_CUTB(i)::S(E),XP(b)
- R(e);S_CUTB(c)::QAB(L),XP(k)
- R(h);N_GUARD::QAR1(L),XR(h)
- R(h);S_CUTB(c)::QAB(L),XP(k)
- R(h);S_CUTB(i)::S(E),XP(b)
- B(c);N_GUARD::QAB(L),XP(k)
- B(c);S_CUTR(e)::QAB1(L),XP(d)
- B(c);S_CUTR(h)::QAR1(L)
- B(c);SBLOCK::QAB(L)
- B(i);P_PINS(I),S_CUTR(e)::QAB1(L),XP(d)
- B(i);S_CUTR(h)::QAR1(L)
- B(i);N_GUARD::S(E),XP(b)
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).