MESON Chess Problem Database
Problem Display
PID: 232505 (8/2K1p3/1pBR4/2k2rN1/Q1nnp2q/1P6/1Nr4B/4b3 w - - 0 1)
Groth, Reinhard
Freie Presse, 1985
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxe4#
- 1...Qg3
- 2.Sxe4#
- 1...Qxh2
- 2.Sxe4#
- 1...Qh3
- 2.Sxe4#
- 1...Qh5
- 2.Sxe4#
- 1...Qh6
- 2.Sxe4#
- 1...Qh7
- 2.Sxe4#
- 1...Qh8
- 2.Sxe4#
- 1...Rxb2
- 2.Qxc4#
- 1...Rd2
- 2.Qxc4#
- 2.b4#
- 1...Re2
- 2.Qxc4#
- 1...Rcf2
- 2.Qxc4#
- 1...Rg2
- 2.Qxc4#
- 1...Rxh2
- 2.Qxc4#
- 1...Rc3
- 2.b4#
- 1...Rf1
- 2.Rd5#
- 1...Rff2
- 2.Rd5#
- 1...Rf3
- 2.Rd5#
- 1...Rf4
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Rf6
- 2.Rd5#
- 1...Rf7
- 2.Rd5#
- 1...Rf8
- 2.Rd5#
- 1...Bf2
- 2.b4#
- 1...Bc3
- 2.Qxc4#
- 1...Bg3
- 2.b4#
- 1...Sxb2
- 2.Qxd4#
- 1...Sd2
- 2.Qa3#
- 2.Qxd4#
- 2.b4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sa5
- 2.Qxd4#
- 1...Se5
- 2.Rd5#
- 2.Qxd4#
- 1...Se2
- 2.Se6#
- 2.Qb5#
- 1...Sxb3
- 2.Se6#
- 2.Qb5#
- 1...Sf3
- 2.Se6#
- 2.Qb5#
- 1...Sb5+
- 2.Qxb5#
- 1...Sxc6
- 2.Se6#
- 1...Se6+
- 2.Sxe6#
- 1...e3
- 2.Sd3#
- 1...e5
- 2.Rd5#
- 1...Qf2
- Tries
- 1.Qa3+?
- 1...Bb4
- 2.Sa4#
- 1...Sxa3!
- 1...Bb4
- 1.Qb4+?
- 1...Bxb4
- 2.Sa4#
- 1...Kxb4!
- 1...Bxb4
- 1.Qa3+?
- Keys
- 1.Bg1!
- threat
- 2.Se6#
- 2.Bxd4#
- 2.Qb5#
- 1...Qxg5
- 2.Bxd4#
- 2.Qb5#
- 1...Rxg5
- 2.Bxd4#
- 2.Qb5#
- 1...Sxd6
- 2.Se6#
- 2.Bxd4#
- 2.Qxd4#
- 1...exd6
- 2.Se6#
- 2.Qb5#
- 1...Qf2
- 2.Sxe4#
- 1...Qh6
- 2.Sxe4#
- 2.Bxd4#
- 2.Qb5#
- 1...Qh8
- 2.Sxe4#
- 2.Se6#
- 2.Qb5#
- 1...Rd2
- 2.Se6#
- 2.Qb5#
- 2.Qxc4#
- 2.b4#
- 1...Rcf2
- 2.Qxc4#
- 1...Rff2
- 2.Rd5#
- 1...Rd5
- 2.Se6#
- 2.Rxd5#
- 2.Qb5#
- 1...Re5
- 2.Bxd4#
- 2.Qb5#
- 1...Rf6
- 2.Bxd4#
- 2.Rd5#
- 2.Qb5#
- 1...Bf2
- 2.b4#
- 1...Bc3
- 2.Se6#
- 2.Qb5#
- 2.Qxc4#
- 1...Sa3
- 2.Se6#
- 2.Bxd4#
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...e3
- 2.Sd3#
- 1...b5
- 2.Se6#
- 2.Bxd4#
- 2.Qxb5#
- 1...e5
- 2.Se6#
- 2.Rd5#
- 2.Qb5#
- 1...e6
- 2.Sxe6#
- 2.Bxd4#
- 2.Qb5#
- threat
- 1.Bg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 28
- Sets
- Q(f);N_GUARD::S(E),XP(e)
- Q(f);N_GUARD,P_PINR(G)::S(E),XP(e)
- Q(f);N_GUARD,P_PINR(G),XB(B)::S(E),XP(e)
- R(b);N_GUARD,XS(A)::QAR1(D),XS(c)
- R(b);N_GUARD::QAR1(D),XS(c)
- R(b);N_GUARD,XB(B)::QAR1(D),XS(c)
- R(b);S_CUTB(a)::P(C)
- R(h);N_GUARD::R1(G)
- R(h);N_GUARD::R1(G),XR(h)
- B(a);N_GUARD::P(C)
- B(a);S_CUTR(b)::QAR1(D),XS(c)
- B(a);N_GUARD,P_PINR(G)::P(C)
- S(c);OGATE,XS(A)::QAB1(D),XS(d)
- S(c);OGATE::QAB1(D),XS(d)
- S(d);CHECK,N_GUARD::QAR1(D),XS(d)
- S(d);N_GUARD,XB(F)::S(E)
- S(d);CHECK,N_GUARD::S(E),XS(d)
- P(e);N_GUARD::S(A)
- P(j);S_CUTR(h)::R1(G)
- Tries
- Try
- Q(D);CHECK
- Vars
- B(a);P_SPINB(a)::S(A)
- Refutation
- S(c);XQ(D)
- Try
- Q(D);CHECK
- Vars
- B(a);SBLOCK,XQ(D)::S(A)
- Refutation
- K(g);S_FLIGHT,XQ(D)
- Try
- Actual
- B(B);P_PINS(d)
- Threat
- DUALS(3)
- Vars
- Q(f);N_GUARD,N_SPINS(d)::S(E),XP(e)
- R(b);N_GUARD,N_SPINS(d)::QAR1(D),XS(c)
- R(h);N_GUARD,N_SPINS(d)::R1(G)
- B(a);N_GUARD,N_SPINS(d)::P(C)
- S(c);N_SPINS(d),OGATE::QAB1(D),XS(d)
- P(e);N_GUARD,N_SPINS(d)::S(A)
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).