MESON Chess Problem Database
Problem Display
PID: 232533 (3b2Q1/P1PK2p1/1B2p3/1p1kp1R1/1R1N2br/r1n4p/3N2n1/7B w - - 0 1)
Groth, Reinhard
Freie Presse, 2004
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.a8Q#
- 2.a8B#
- 1...Bd1
- 2.Qxe6#
- 1...Be2
- 2.Qxe6#
- 1...Bf3
- 2.Qxe6#
- 1...Bh5
- 2.Qxe6#
- 1...Bxg5
- 2.Qa8#
- 1...Bf6
- 2.Qa8#
- 1...Bxc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sb1
- 2.Rxb5#
- 1...Sd1
- 2.Rxb5#
- 1...Sa2
- 2.Rxb5#
- 1...Se2
- 2.Rxb5#
- 1...Sa4
- 2.a8Q#
- 2.a8B#
- 1...Rb3
- Tries
- 1.Se2?
- threat
- 2.Sf4#
- 2.Rd4#
- 1...Bxe2
- 2.Qxe6#
- 1...Bxg5
- 2.Qa8#
- 1...Sxe2
- 2.Rxb5#
- 1...Ra4
- 2.Sxc3#
- 2.Sf4#
- 1...Bf3
- 2.Qxe6#
- 1...Bh5
- 2.Qxe6#
- 1...Se4
- 2.Rd4#
- 1...Bf5!
- threat
- 1.S4f3?
- threat
- 2.Rd4#
- 2.Rxe5#
- 1...Bxf3
- 2.Qxe6#
- 1...Bxg5
- 2.Qa8#
- 1...Bxc7
- 2.Rd4#
- 2.Qa8#
- 1...Ra4
- 2.Rxe5#
- 1...Rh5
- 2.Rd4#
- 1...Bh5
- 2.Rxe5#
- 2.Qxe6#
- 1...Bf6
- 2.Rd4#
- 2.Qa8#
- 1...Se2
- 2.Rxb5#
- 2.Rxe5#
- 1...Bf5!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 2.Qxe6#
- 1...Bxg5
- 2.Qxe6#
- 2.Qa8#
- 1...Rh6
- 2.Se3#
- 1...Bf3
- 2.Qxe6#
- 1...Sb1
- 2.Rxb5#
- 2.Qxe6#
- 1...Sd1
- 2.Rxb5#
- 2.Qxe6#
- 1...Sa2
- 2.Rxb5#
- 2.Qxe6#
- 1...Se2
- 2.Rxb5#
- 2.Qxe6#
- 1...Sa4
- 2.Qxe6#
- 2.a8Q#
- 2.a8B#
- 1...Se4
- 2.Qxe6#
- 1...Bxf5!
- threat
- 1.Bxg2+?
- 1...Bf3
- 2.Qxe6#
- 1...Se4
- 2.Bxe4#
- 2.Rxb5#
- 1...hxg2!
- 1...Bf3
- 1.Ra4?
- threat
- 2.a8Q#
- 2.a8B#
- 1...Bxg5
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Bxc7
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Sxa4
- 2.a8Q#
- 2.a8B#
- 1...bxa4
- 2.a8Q#
- 2.a8B#
- 1...Bf5
- 2.a8Q#
- 2.a8B#
- 1...Ra1
- 2.a8Q#
- 2.a8B#
- 1...Ra2
- 2.a8Q#
- 2.a8B#
- 1...Rb3
- 2.a8Q#
- 2.a8B#
- 1...Rh5
- 2.a8Q#
- 2.a8B#
- 1...Rh6
- 2.a8Q#
- 2.a8B#
- 1...Rh7
- 2.a8Q#
- 2.a8B#
- 1...Rh8
- 2.a8Q#
- 2.a8B#
- 1...Bd1
- 2.Qxe6#
- 2.a8Q#
- 2.a8B#
- 1...Be2
- 2.Qxe6#
- 2.a8Q#
- 2.a8B#
- 1...Bf3
- 2.Qxe6#
- 2.a8Q#
- 2.a8B#
- 1...Bh5
- 2.Qxe6#
- 2.a8Q#
- 2.a8B#
- 1...Bf6
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Be7
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Sb1
- 2.a8Q#
- 2.a8B#
- 1...Sd1
- 2.a8Q#
- 2.a8B#
- 1...Sa2
- 2.a8Q#
- 2.a8B#
- 1...Se2
- 2.a8Q#
- 2.a8B#
- 1...Se4
- 2.a8Q#
- 2.a8B#
- 1...h2
- 2.a8Q#
- 2.a8B#
- 1...b4
- 2.a8Q#
- 2.a8B#
- 1...g6
- 2.a8Q#
- 2.a8B#
- 1...Rxa4!
- threat
- 1.Qxd8?
- threat
- 2.Ke7#
- 2.Kc8#
- 2.Ke8#
- 2.Qa8#
- 1...Rxa7
- 2.Ke7#
- 2.Kc8#
- 2.Ke8#
- 1...Bh5
- 2.Ke7#
- 2.Kc8#
- 2.Qa8#
- 1...Se4
- 2.Qa8#
- 1...Rh8!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Bxc7
- 2.Qc5#
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sa4
- 2.Qd6#
- 2.a8Q#
- 2.a8B#
- 1...Se4!
- threat
- 1.cxd8Q?
- threat
- 2.Kc7#
- 2.Ke7#
- 2.Kc8#
- 2.Ke8#
- 2.Qa8#
- 1...Bh5
- 2.Kc7#
- 2.Ke7#
- 2.Kc8#
- 2.Qxe6#
- 2.Qa8#
- 1...Se4
- 2.Qa8#
- 1...Rxa7+!
- threat
- 1.c8Q?
- threat
- 2.Qb7#
- 2.Qc5#
- 2.Qc6#
- 2.Qa8#
- 1...Bxb6
- 2.Qc6#
- 1...Bc7
- 2.Qb7#
- 2.Qa8#
- 1...Be7
- 2.Qb7#
- 2.Qc6#
- 2.Qa8#
- 1...Sa4
- 2.Qb7#
- 2.Qc6#
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Se4
- 2.Qb7#
- 2.Qc6#
- 2.Qa8#
- 1...Rxa7+!
- threat
- 1.Se2?
- Keys
- 1.Sc2!
- threat
- 2.Se3#
- 2.Rd4#
- 1...Bxg5
- 2.Qa8#
- 1...Ra4
- 2.Se3#
- 1...Bd1
- 2.Se3#
- 2.Qxe6#
- 1...Be2
- 2.Se3#
- 2.Qxe6#
- 1...Bf3
- 2.Qxe6#
- 1...Bf5
- 2.Se3#
- 1...Bh5
- 2.Se3#
- 2.Qxe6#
- 1...Sb1
- 2.Rd4#
- 2.Rxb5#
- 1...Sd1
- 2.Rd4#
- 2.Rxb5#
- 1...Sa2
- 2.Rd4#
- 2.Rxb5#
- 1...Se2
- 2.Rxb5#
- 1...Sa4
- 2.Rd4#
- 2.a8Q#
- 2.a8B#
- 1...Se4
- 2.Rd4#
- threat
- 1.Sc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD::P=Q
- B(e);N_GUARD::QAB1(J),XP(j)
- B(e);N_GUARD,N_SPINS(a)::QAB1(J),XP(j)
- B(l);N_SPINP(i),OGATE,P_SPINP(j),XR(E)::QAB(J)
- B(l);OGATE::QAB(J)
- B(l);OGATE,XP(H)::QAB(J)
- S(c);N_GUARD::R(C),XP(g)
- S(c);S_CUTR(b)::P=Q
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,XS(D)::QAB1(J),XP(j)
- B(l);N_SPINP(i),OGATE,P_SPINP(j),XR(E)::QAB(J)
- S(c);N_GUARD,XS(D)::R(C),XP(g)
- B(e);N_GUARD,N_SPINS(a)::QAB1(J),XP(j)
- B(e);N_GUARD::QAB1(J),XP(j)
- S(c);N_SPINS(a)::R1(C)
- Refutation
- B(e);N_SPINP(i),P_SPINP(j)
- Try
- S(D);N_PINS(a)
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,XS(D)::QAB1(J),XP(j)
- B(l);N_SPINP(i),OGATE,P_SPINP(j),XR(E)::QAB(J)
- R(b);::R1(E),XP(i)
- R(f);::R1(C)
- Refutation
- B(e);N_SPINP(i),P_SPINP(j)
- Try
- S(D);N_PINP(i),P_PINP(j)
- Threat
- DUALS(2)
- Vars
- R(f);::S(D)
- B(e);N_SPINS(a)::QAB1(J),XP(j)
- S(c);N_SPINS(a)::QAB1(J),XP(j)
- Refutation
- B(e);XS(D)
- Try
- B(A);CHECK,XS(a)
- Vars
- B(e);P_SPINB(e)::QAB1(J),XP(j)
- Refutation
- P(d);XB(A)
- Try
- R(C);
- Threat
- P=Q
- Vars
- S(c);XR(C)::P=Q
- P(g);XR(C)::P=Q
- B(e);N_SPINP(i),P_SPINP(j)::P=Q
- R(b);::P=Q
- R(f);::P=Q
- S(c);::P=Q
- S(c);N_SPINS(a)::P=Q
- P(d);::P=Q
- P(g);::P=Q
- P(k);::P=Q
- Refutation
- R(b);XR(C)
- Try
- Q(J);XB(l)
- Threat
- DUALS(4)
- Vars
- S(c);N_SPINS(a)::QAB(J)
- Refutation
- R(f);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- B(l);OGATE::QAB(J)
- Refutation
- S(c);N_SPINS(a)
- Try
- P(H);XB(l)
- Threat
- DUALS(5)
- Vars
- S(c);N_SPINS(a)::QAB(H)
- Refutation
- R(b);CHECK,XP(G)
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- B(l);XB(F)::QAB1(H)
- Refutation
- R(b);CHECK,XP(G)
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- B(l);N_SPINP(i),OGATE,P_SPINP(j),XR(E)::QAB(J)
- R(b);::S(D)
- B(e);N_GUARD,N_SPINS(a)::QAB1(J),XP(j)
- B(e);N_SPINP(i),P_SPINP(j)::S(D)
- S(c);N_GUARD::R(C),XP(g)
- S(c);N_SPINS(a)::R1(C)
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).