MESON Chess Problem Database
Problem Display
PID: 232498 (7b/1R3q2/Kp1pB1n1/NPkN1p1r/2n2pP1/Ppr5/2R5/2BQ4 w - - 0 1)
Groth, Reinhard
Freie Presse, 1979
#2
11 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe6
- 2.Rc7#
- 1...Qg8
- 2.Rc7#
- 1...Qf6
- 2.Rc7#
- 1...Qxb7+
- 2.Sxb7#
- 1...Qc7
- 2.Rxc7#
- 1...Qf8
- 2.Rc7#
- 1...Rxc2
- 2.Sxb3#
- 1...Rd3
- 2.Rxc4#
- 1...Re3
- 2.Rxc4#
- 1...Rf3
- 2.Rxc4#
- 1...Rg3
- 2.Rxc4#
- 1...Rch3
- 2.Rxc4#
- 1...Sxa3
- 2.Bxa3#
- 1...Sce5
- 2.Qg1#
- 1...Qxe6
- Tries
- 1.Sxc3?
- threat
- 2.Sa4#
- 2.Sxb3#
- 2.Qd5#
- 1...Qxb7+
- 2.Sxb7#
- 1...Qxe6
- 2.Sa4#
- 2.Sxb3#
- 2.Rc7#
- 1...Bxc3
- 2.Sxb3#
- 2.Qd5#
- 1...Sxa3
- 2.Bxa3#
- 1...Sxa5
- 2.Sa4#
- 2.Se4#
- 2.Qd5#
- 1...bxc2
- 2.Sa4#
- 2.Sb3#
- 2.Qd5#
- 1...fxg4
- 2.Sa4#
- 2.Se4#
- 2.Sxb3#
- 1...bxa5
- 2.Sa4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Bd4
- 2.Sa4#
- 2.Sxb3#
- 1...Se3
- 2.Sa4#
- 2.Se4#
- 2.Sxb3#
- 1...Se7
- 2.Sa4#
- 2.Sxb3#
- 1...b2
- 2.Sa4#
- 2.Sb3#
- 2.Qd5#
- 1...Sd2!
- threat
- 1.Sxb6?
- threat
- 2.Sa4#
- 2.Qd5#
- 1...Qxb7+
- 2.Sxb7#
- 1...Qxe6
- 2.Sa4#
- 2.Rc7#
- 1...Sxa3
- 2.Bxa3#
- 1...Sxb6
- 2.Sxb3#
- 1...fxg4
- 2.Sa4#
- 1...Rd3
- 2.Rxc4#
- 1...d5
- 2.Qxd5#
- 1...Bd4
- 2.Sa4#
- 1...Sb2
- 2.Sxb3#
- 2.Qd5#
- 1...Se3
- 2.Sxb3#
- 2.Sa4#
- 1...Se7
- 2.Sa4#
- 2.Sd7#
- 1...Sd2!
- threat
- 1.Rxc3?
- threat
- 2.Sxb3#
- 2.Rxc4#
- 1...Qxb7+
- 2.Sxb7#
- 1...Bxc3
- 2.Sxb3#
- 1...Se5
- 2.Sxb3#
- 2.Qg1#
- 1...b2
- 2.Sb3#
- 2.Rxc4#
- 1...bxa5!
- threat
- 1.Sxc3?
- Keys
- 1.Sf6!
- threat
- 2.Qd5#
- 1...Qxb7+
- 2.Sxb7#
- 1...Qxe6
- 2.Rc7#
- 1...Sxa3
- 2.Bxa3#
- 1...fxg4
- 2.Se4#
- 1...Rd3
- 2.Rxc4#
- 1...Sd2
- 2.Qg1#
- 1...d5
- 2.Qxd5#
- 1...Se3
- 2.Sxb3#
- 1...Se7
- 2.Sd7#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 10
- Sets
- Q(k);N_GUARD,XB(J)::R(K)
- Q(k);N_GUARD::R(K)
- Q(k);CHECK,XR(K)::S(F),XQ(k)
- Q(k);N_GUARD::R(K),XQ(k)
- R(b);N_GUARD,XR(C)::S(F),XP(a)
- R(b);OGATE,P_SPINS(c)::R1(C),XS(c)
- S(c);OGATE,P_SPINR(b),XP(D)::B(A),XS(c)
- S(c);N_GUARD,P_SPINR(b),S_CUTB(l)::QAB(B)
- Tries
- Try
- S(H);XR(b)
- Threat
- DUALS(3)
- Vars
- Q(k);CHECK,XR(K)::S(F),XQ(k)
- S(c);OGATE,XP(D)::B(A),XS(c)
- P(i);::QAR1(B),XP(i)
- Refutation
- S(c);
- Try
- S(H);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(k);CHECK,XR(K)::S(F),XQ(k)
- S(c);OGATE,P_SPINR(b),XP(D)::B(A),XS(c)
- S(c);P_SPINR(b),XS(H)::S(F),XP(a)
- P(f);XP(E)::S(H)
- R(b);OGATE,P_SPINS(c)::R1(C),XS(c)
- P(i);::QAR1(B),XP(i)
- B(l);::S(H)
- Refutation
- S(c);P_SPINR(b)
- Try
- R(C);P_PINS(c),XR(b)
- Threat
- DUALS(2)
- Vars
- Q(k);CHECK,XR(K)::S(F),XQ(k)
- B(l);N_SPINS(c),XR(C)::S(F),XP(a)
- Refutation
- P(h);XS(F)
- Try
- Actual
- S(H);
- Threat
- QAR1(B)
- Vars
- Q(k);CHECK,XR(K)::S(F),XQ(k)
- Q(k);N_GUARD,XB(J)::R(K)
- S(c);OGATE,P_SPINR(b),XP(D)::B(A),XS(c)
- P(f);N_GUARD,XP(E)::S(H)
- R(b);OGATE,P_SPINS(c)::R1(C),XS(c)
- S(c);N_GUARD,P_SPINR(b)::QAB(B)
- P(i);::QAR1(B),XP(i)
- S(c);P_SPINR(b)::S(F),XP(a)
- S(j);S_CUTQ(k)::S(H)
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).