MESON Chess Problem Database
Problem Display
PID: 51198 (4K2N/1Rpp1pb1/Qp1kn2R/2N1p3/b1PPB3/8/8/5r2 w - - 0 1)
Rice, John Michael
Manchester Guardian, 1953
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxf7#
- 1...Rb1
- 2.Sxf7#
- 1...Rc1
- 2.Sxf7#
- 1...Rd1
- 2.Sxf7#
- 1...Re1
- 2.Sxf7#
- 1...Rg1
- 2.Sxf7#
- 1...Rh1
- 2.Sxf7#
- 1...Bf6
- 2.Sxf7#
- 1...c6
- 2.Rxd7#
- 1...f5
- 2.Sf7#
- 1...f6
- 2.Sf7#
- 1...Ra1
- Tries
- 1.Qxb6+?
- 1...Bc6
- 2.Qxc7#
- 1...c6
- 2.Rxd7#
- 2.Qc7#
- 1...cxb6!
- 1...Bc6
- 1.Qxb6+?
- Keys
- 1.Sd3!
- threat
- 2.c5#
- 1...Bxh6
- 2.dxe5#
- 1...Rc1
- 2.Sxf7#
- 1...Rf6
- 2.dxe5#
- 1...Bc6
- 2.Qa3#
- 1...Bf6
- 2.Sxf7#
- 1...c5
- 2.dxc5#
- 1...c6
- 2.Rxd7#
- 1...f6
- 2.Sf7#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::S(I),XP(i)
- B(j);N_SPINS(f),S_CUTR(a)::S(I),XP(i)
- P(g);N_SPINP(d),OGATE::R1(G),XP(h)
- P(i);S_CUTR(a)::S(I)
- P(i);N_SPINS(f),S_CUTR(a)::S(I)
- Tries
- Try
- Q(E);CHECK,XP(d)
- Vars
- B(b);P_SPINB(b)::QAB1(E),XP(g)
- Refutation
- P(g);XQ(E)
- Try
- Actual
- S(D);
- Threat
- P(A)
- Vars
- B(j);N_GUARD,N_SPINS(f),XR(F)::P(B),XP(c)
- R(a);N_GUARD::S(I),XP(i)
- R(a);N_SPINS(f),S_CUTB(j)::P(B),XP(c)
- B(b);N_SPINP(d),OGATE::QAB(E)
- B(j);N_SPINS(f),S_CUTR(a)::S(I),XP(i)
- P(g);OGATE::P(B),XP(g)
- P(g);N_SPINP(d),OGATE::R1(G),XP(h)
- P(i);N_SPINS(f),S_CUTR(a)::S(I)
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).