MESON Chess Problem Database
Problem Display
PID: 223100 (8/2K1P3/3p1B2/2Pk1P2/3Pp3/2Rp2rN/5r2/3N1B1Q w - - 0 1)
Phelps, Francis Bradley
San Francisco Argonaut, 1886
#2
11 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sf4#
- 1...Rb2
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Re2
- 2.Sf4#
- 1...Rfg2
- 2.Sf4#
- 1...Rh2
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Rg1
- 2.Se3#
- 1...Rgg2
- 2.Se3#
- 1...Re3
- 2.Sxe3#
- 1...Rg4
- 2.Se3#
- 1...Rg5
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 1...Rg8
- 2.Se3#
- 1...d2
- 2.Bc4#
- 1...dxc5
- 2.Rxc5#
- 1...Ra2
- Tries
- 1.Shxf2?
- threat
- 2.Qxe4#
- 1...Rg2
- 2.Se3#
- 1...Re3
- 2.Sxe3#
- 1...Rg4
- 2.Se3#
- 1...Rf3!
- threat
- 1.Bxd3?
- threat
- 2.Bc4#
- 2.Bxe4#
- 2.Qxe4#
- 1...Rxf5
- 2.Bc4#
- 2.Qxe4#
- 1...Rgf3
- 2.Bc4#
- 1...Re2
- 2.Sf4#
- 2.Bc4#
- 1...Rfg2
- 2.Sf4#
- 2.Bc4#
- 1...Rff3
- 2.Bc4#
- 1...Rf4
- 2.Sxf4#
- 2.Bc4#
- 1...Rgg2
- 2.Se3#
- 2.Bc4#
- 1...Re3
- 2.Sxe3#
- 2.Bc4#
- 1...Rg4
- 2.Se3#
- 2.Bc4#
- 1...Rxd3!
- threat
- 1.Qh2?
- 1...Rxf1
- 2.Qa2#
- 1...Rxh2
- 2.Sf4#
- 1...Rxf5
- 2.Qa2#
- 1...Rxh3
- 2.Qxd6#
- 1...dxc5
- 2.Rxc5#
- 1...Rgf3
- 2.Qxd6#
- 1...Ra2
- 2.Sf4#
- 2.Qxa2#
- 1...Rb2
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Re2
- 2.Sf4#
- 1...Rfg2
- 2.Sf4#
- 1...Rff3
- 2.Qa2#
- 1...Rf4
- 2.Sxf4#
- 2.Qa2#
- 1...Rg1
- 2.Se3#
- 2.Qxd6#
- 1...Rgg2
- 2.Se3#
- 2.Qxd6#
- 1...Re3
- 2.Sxe3#
- 2.Qxd6#
- 1...Rg4
- 2.Se3#
- 2.Qxd6#
- 1...Rg5
- 2.Se3#
- 2.Qxd6#
- 1...Rg6
- 2.Se3#
- 2.Qxd6#
- 1...Rg7
- 2.Se3#
- 2.Qxd6#
- 1...Rg8
- 2.Se3#
- 2.Qxd6#
- 1...d2
- 2.Bc4#
- 1...e3!
- 1...Rxf1
- 1.cxd6?
- threat
- 2.Rc5#
- 1...Rc2
- 2.Sf4#
- 1...Rxf5!
- threat
- 1.e8Q?
- threat
- 2.Qhxe4#
- 2.Qc6#
- 2.Qf7#
- 2.Qexe4#
- 2.Qe6#
- 2.Qa8#
- 1...Rxf5
- 2.Qhxe4#
- 2.Qf7#
- 2.Qexe4#
- 1...Rgf3
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 2.Qg8#
- 1...Ra2
- 2.Sf4#
- 2.Qhxe4#
- 2.Qc6#
- 2.Qf7#
- 2.Qexe4#
- 2.Qe6#
- 1...Rb2
- 2.Sf4#
- 2.Qhxe4#
- 2.Qc6#
- 2.Qf7#
- 2.Qexe4#
- 2.Qe6#
- 1...Re2
- 2.Sf4#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Rfg2
- 2.Sf4#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Rff3
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Rf4
- 2.Sxf4#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Rgg2
- 2.Se3#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Re3
- 2.Sxe3#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 2.Qg8#
- 1...Rg4
- 2.Se3#
- 2.Qc6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Rg8
- 2.Se3#
- 2.Qhxe4#
- 2.Qc6#
- 2.Qf7#
- 2.Qexe4#
- 2.Qe6#
- 2.Qxg8#
- 1...Rg7+!
- threat
- 1.e8B?
- threat
- 2.Bc6#
- 2.Bf7#
- 1...Rxf5
- 2.Bf7#
- 1...Rg7+!
- threat
- 1.Shxf2?
- Keys
- 1.Qg2!
- 1...Rxf1
- 2.Qa2#
- 1...Rfxg2
- 2.Sf4#
- 1...Rxf5
- 2.Qa2#
- 1...Rgxg2
- 2.Se3#
- 1...Rxh3
- 2.Qg8#
- 1...dxc5
- 2.Rxc5#
- 1...Rgf3
- 2.Qg8#
- 1...Ra2
- 2.Sf4#
- 2.Qxa2#
- 1...Rb2
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Re2
- 2.Sf4#
- 1...Rff3
- 2.Qa2#
- 1...Rf4
- 2.Sxf4#
- 2.Qa2#
- 1...Re3
- 2.Sxe3#
- 2.Qg8#
- 1...Rg4
- 2.Se3#
- 1...Rg5
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 1...Rg8
- 2.Se3#
- 2.Qxg8#
- 1...d2
- 2.Bc4#
- 1...Rxf1
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::S(E)
- R(a);N_GUARD,N_SPINP(d)::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(c);N_GUARD::S(A)
- R(c);N_GUARD,N_SPINP(d)::S(A)
- R(c);N_GUARD::S(A),XR(c)
- R(c);N_GUARD,P_PINP(K)::S(A)
- P(b);OGATE::B(B)
- P(f);OGATE,XP(G)::R1(D),XP(f)
- Tries
- Try
- S(E);XR(a)
- Threat
- QAB1(C),XP(d)
- Vars
- R(c);N_GUARD,N_SPINP(d)::S(A)
- R(c);N_GUARD::S(A),XR(c)
- R(c);N_GUARD::S(A)
- Refutation
- R(c);N_SPINP(d)
- Try
- B(B);XP(b)
- Threat
- DUALS(3)
- Vars
- R(c);N_SPINP(d)::B(B)
- R(a);N_SPINP(d)::B(B)
- Refutation
- R(c);XB(B)
- Try
- Q(C);N_PINP(d)
- Vars
- R(a);OGATE,XB(B)::QAB(C)
- R(a);N_GUARD,XQ(C)::S(E)
- R(a);OGATE,XP(H)::QAB(C)
- R(c);OGATE,XS(E)::QAR1(C),XP(f)
- P(f);OGATE,XP(G)::R1(D),XP(f)
- R(c);OGATE::QAR1(C),XP(f)
- R(a);N_GUARD::S(E)
- R(a);OGATE::QAB(C)
- P(b);OGATE::B(B)
- Refutation
- P(d);
- Try
- P(G);XP(f)
- Threat
- R1(D)
- Vars
- R(a);N_GUARD,P_PINR(D)::S(E)
- Refutation
- R(a);XP(H)
- Try
- P(K);
- Threat
- DUALS(6)
- Refutation
- R(c);CHECK
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(a);XP(H)::B(K)
- Refutation
- R(c);CHECK
- Try
- Actual
- Q(C);
- Vars
- R(a);OGATE,XB(B)::QAB(C)
- R(a);N_GUARD,N_SPINP(d),XQ(C)::S(E)
- R(a);OGATE,XP(H)::QAB(C)
- R(c);N_GUARD,N_SPINP(d),XQ(C)::S(A)
- R(c);OGATE,XS(E)::QAB(C)
- P(f);OGATE,XP(G)::R1(D),XP(f)
- R(c);N_SPINP(d),OGATE::QAB(C)
- R(a);N_GUARD::S(E)
- R(a);N_SPINP(d),OGATE::QAB(C)
- R(c);N_GUARD::S(A)
- R(c);N_GUARD,P_PINP(K)::S(A)
- P(b);OGATE::B(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).