MESON Chess Problem Database
Problem Display
PID: 161467 (1b3q1B/8/bNp1B3/2R5/r2pkPRN/p6p/2PQ2n1/2K5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Scacco!, 1979
#2
10 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Bf5#
- 1...Qh6
- 2.Bf5#
- 1...Qe7
- 2.Bf5#
- 1...Qg7
- 2.Bf5#
- 1...Qxf4
- 2.Bf5#
- 1...Qf5
- 2.Bxf5#
- 1...Qd8
- 2.Bf5#
- 1...Qe8
- 2.Bf5#
- 1...Qg8
- 2.Bf5#
- 1...Qxh8
- 2.Bf5#
- 1...Rc4
- 2.Qd3#
- 1...Ra5
- 2.Qxd4#
- 1...Bd3
- 2.Qxd3#
- 2.cxd3#
- 1...Bc4
- 2.Qxd4#
- 1...Bb7
- 2.Qd3#
- 1...Bc8
- 2.Qd3#
- 1...Bxf4
- 2.Re5#
- 1...Be5
- 2.Rxe5#
- 1...Ba7
- 2.Re5#
- 1...Qd6
- Tries
- 1.Bc4?
- threat
- 2.Qd3#
- 2.Qxd4#
- 1...Qxc5
- 2.Qd3#
- 1...Qxh8
- 2.Qd3#
- 1...Rxc4
- 2.Qd3#
- 1...Bxc4
- 2.Qxd4#
- 1...Bxf4
- 2.Re5#
- 1...Sxh4
- 2.Qe2#
- 2.Qd3#
- 1...Qd6
- 2.Qd3#
- 1...Qg7
- 2.Qd3#
- 1...Qf6
- 2.Qd3#
- 1...Qd8
- 2.Qd3#
- 1...Be5
- 2.Rxe5#
- 2.Qd3#
- 1...Se1
- 2.Qxe1#
- 2.Qe2#
- 2.Qxd4#
- 1...d3
- 2.Qxd3#
- 2.cxd3#
- 1...Qxf4!
- threat
- 1.Rc4?
- threat
- 2.Qd3#
- 2.Qxd4#
- 1...Qxf4
- 2.Bf5#
- 1...Qxh8
- 2.Bf5#
- 2.Qd3#
- 1...Rxc4
- 2.Qd3#
- 1...Bxc4
- 2.Qxd4#
- 1...Sxh4
- 2.Qe2#
- 2.Qd3#
- 1...Qf6
- 2.Qd3#
- 1...Qc5
- 2.Qd3#
- 1...Qd6
- 2.Bf5#
- 2.Qd3#
- 1...Qg7
- 2.Bf5#
- 2.Qd3#
- 1...Qd8
- 2.Bf5#
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Qxe1#
- 2.Qe2#
- 2.Qxd4#
- 1...c5
- 2.Bd5#
- 2.Qd3#
- 1...Bxf4!
- threat
- 1.Rb5?
- threat
- 2.Qd3#
- 1...Qxf4
- 2.Bf5#
- 1...Bxf4
- 2.Re5#
- 1...Se1
- 2.Qxe1#
- 2.Qe2#
- 1...d3
- 2.Qxd3#
- 2.cxd3#
- 1...Bxb5!
- threat
- 1.Qe2+?
- 1...Se3
- 2.Qf3#
- 1...Bxe2!
- 1...Se3
- 1.Qxg2+?
- 1...Ke3
- 2.Qf3#
- 1...hxg2!
- 1...Ke3
- 1.f5+?
- 1...Bf4
- 2.Re5#
- 1...Sf4!
- 1...Bf4
- 1.Bc4?
- Keys
- 1.Sc4!
- threat
- 2.Qd3#
- 2.Qxd4#
- 1...Qxc5
- 2.Qd3#
- 1...Qxf4
- 2.Bf5#
- 1...Qxh8
- 2.Bf5#
- 2.Qd3#
- 1...Rxc4
- 2.Qd3#
- 1...Bxc4
- 2.Qxd4#
- 1...Bxf4
- 2.Re5#
- 1...Sxh4
- 2.Qe2#
- 2.Qd3#
- 1...Qd6
- 2.Bf5#
- 2.Qd3#
- 1...Qg7
- 2.Bf5#
- 2.Qd3#
- 1...Qf6
- 2.Qd3#
- 1...Qd8
- 2.Bf5#
- 2.Qd3#
- 1...Be5
- 2.Rxe5#
- 2.Qd3#
- 1...Se1
- 2.Qxe1#
- 2.Qe2#
- 2.Qxd4#
- 1...d3
- 2.Qxd3#
- 2.cxd3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- Q(j);N_GUARD::B(I)
- Q(j);N_GUARD,P_PINQ(C),P_SPINQ(j),XP(D)::B(I)
- Q(j);N_GUARD::B(I),XQ(j)
- Q(j);N_GUARD,XB(J)::B(I)
- R(d);P_PINP(B),S_CUTB(g)::QAB1(C)
- R(d);N_GUARD::QAR1(C),XP(e)
- B(g);S_CUTR(d)::QAR1(C),XP(e)
- B(g);N_GUARD::QAB1(C)
- B(i);N_GUARD,P_PINQ(C),P_SPINB(i),XP(D)::R1(G)
- B(i);N_GUARD::R1(G),XB(i)
- B(i);N_GUARD::R1(G)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- Q(j);XR(G)::QAB1(C)
- Q(j);XB(J)::QAB1(C)
- R(d);P_PINP(B),XB(I)::QAB1(C)
- B(g);XB(I)::QAR1(C),XP(e)
- B(i);N_GUARD,P_PINQ(C),P_SPINB(i),XP(D)::R1(G)
- Q(j);::QAB1(C)
- Refutation
- Q(j);P_PINQ(C),P_SPINQ(j),XP(D)
- Try
- R(G);P_PINP(e)
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD,P_PINQ(C),P_SPINQ(j),XP(D)::B(I)
- R(d);N_SPINP(e),P_PINP(B),XR(G)::QAB1(C)
- B(g);N_SPINP(e),XR(G)::QAR1(C),XP(e)
- Q(j);::QAB1(C)
- B(i);::QAB1(C)
- Refutation
- B(i);P_PINQ(C),P_SPINB(i),XP(D)
- Try
- R(G);
- Threat
- QAB1(C)
- Vars
- Q(j);N_GUARD,P_PINQ(C),P_SPINQ(j),XP(D)::B(I)
- B(i);N_GUARD,P_PINQ(C),P_SPINB(i),XP(D)::R1(G)
- Refutation
- B(g);XR(G)
- Try
- Q(C);CHECK
- Vars
- S(a);P_SPINS(a)::QAB1(C)
- Refutation
- B(g);XQ(C)
- Try
- Q(C);CHECK,XS(a)
- Vars
- K(f);P-FLIGHT::QAR1(C)
- Refutation
- P(c);XQ(C)
- Try
- P(D);CHECK
- Vars
- B(i);P_PINQ(C),P_SPINB(i)::R1(G)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(j);XR(G)::QAB1(C)
- Q(j);N_GUARD,P_PINQ(C),P_SPINQ(j),XP(D)::B(I)
- R(d);P_PINP(B),XS(H)::QAB1(C)
- B(g);XS(H)::QAR1(C),XP(e)
- B(i);N_GUARD,P_PINQ(C),P_SPINB(i),XP(D)::R1(G)
- Q(j);::QAB1(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).