MESON Chess Problem Database
Problem Display
PID: 226340 (3qQ3/7N/p3BpP1/b2R4/2NrkP2/2P2nK1/4P3/4R3 w - - 0 1)
Gockel, Hubert
Deutsche Schachzeitung, 1986
#2
11 + 7
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.Sxf6#
- 1...Qc7
- 2.Sxf6#
- 1...Qxd5
- 2.Sxf6#
- 1...Qd6
- 2.Sxf6#
- 1...Qd7
- 2.Sxf6#
- 1...Qa8
- 2.Sxf6#
- 1...Qb8
- 2.Sxf6#
- 1...Qc8
- 2.Sxf6#
- 1...Qxe8
- 2.Sxf6#
- 1...Rd1
- 2.exf3#
- 1...Rd2
- 2.exf3#
- 1...Rd3
- 2.exd3#
- 2.exf3#
- 1...Rxc4
- 2.exf3#
- 1...Qb6
- Tries
- 1.Bd7+?
- 1...Qe7
- 2.Sxf6#
- 1...Qxe8
- 2.Sxf6#
- 1...Se5
- 2.Rxd4#
- 1...Kxd5!
- 1...Qe7
- 1.Bf7+?
- 1...Qe7
- 2.Sxf6#
- 1...Qxe8
- 2.Sxf6#
- 1...Se5!
- 1...Qe7
- 1.Bg8+?
- 1...Qe7
- 2.Sxf6#
- 1...Qxe8
- 2.Sxf6#
- 1...Se5!
- 1...Qe7
- 1.Rd1?
- threat
- 2.exf3#
- 1...Rxc4
- 2.Bf5#
- 1...Se5
- 2.R1xd4#
- 1...Rd3
- 2.exd3#
- 1...Se1
- 2.R1xd4#
- 1...Sg1
- 2.R1xd4#
- 1...Sh2
- 2.R1xd4#
- 1...Sh4
- 2.R1xd4#
- 1...Sg5
- 2.R1xd4#
- 1...Sd2!
- threat
- 1.Rxd8?
- threat
- 2.Sxf6#
- 1...Rxc4
- 2.exf3#
- 1...f5
- 2.Sf6#
- 2.Bd5#
- 1...Bxd8!
- threat
- 1.Qc6?
- threat
- 2.Bf5#
- 2.Rxd4#
- 2.Re5#
- 1...Qxd5
- 2.Sxf6#
- 1...Rxc4
- 2.Re5#
- 2.exf3#
- 1...Bxc3
- 2.Bf5#
- 2.Re5#
- 1...Se5
- 2.Rxd4#
- 2.Rxe5#
- 1...Qd7
- 2.Sxf6#
- 2.Rxd4#
- 2.Re5#
- 1...Qc8
- 2.Sxf6#
- 2.Rxd4#
- 2.Re5#
- 1...Rd1
- 2.Bf5#
- 2.Rd4#
- 2.Re5#
- 2.exf3#
- 1...Rd2
- 2.Bf5#
- 2.Rd4#
- 2.Re5#
- 2.exf3#
- 1...Rd3
- 2.Bf5#
- 2.Rd4#
- 2.Re5#
- 2.exd3#
- 2.exf3#
- 1...Sh4
- 2.Rxd4#
- 2.Re5#
- 1...f5
- 2.Bxf5#
- 2.Rxd4#
- 2.Re5#
- 1...Rxd5!
- threat
- 1.Qxd8?
- threat
- 2.Sxf6#
- 2.Bf5#
- 1...Rxc4
- 2.exf3#
- 1...Rxd5
- 2.Sxf6#
- 2.Qxd5#
- 1...Se5
- 2.Sxf6#
- 2.Rxd4#
- 1...Sh4
- 2.Sxf6#
- 2.Rxd4#
- 1...f5
- 2.Sf6#
- 2.Bxf5#
- 1...Bxd8!
- threat
- 1.Bd7+?
- Keys
- 1.Qd7!
- threat
- 2.Bf5#
- 1...Qxd7
- 2.Sxf6#
- 1...Rxc4
- 2.exf3#
- 1...Rxd5
- 2.Bxd5#
- 1...Sh4
- 2.Rxd4#
- 1...f5
- 2.Bxf5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(g);N_GUARD::S(J),XP(f)
- Q(g);N_GUARD,P_PINP(F)::S(J),XP(f)
- Q(g);N_GUARD,XR(G)::S(J),XP(f)
- Q(g);N_GUARD,XQ(K)::S(J),XP(f)
- R(b);::R(A)+P(B)DCHECK,XS(a)
- R(b);XS(E)::R(A)+P(B)DCHECK,XS(a)
- Tries
- Try
- B(H);CHECK
- Vars
- Q(g);P_SPINQ(g)::S(J),XP(f)
- Q(g);XQ(K)::S(J),XP(f)
- S(a);P_SPINS(a)::R1(G),XR(b)
- Refutation
- K(c);S_FLIGHT,XR(G)
- Try
- B(H);CHECK
- Vars
- Q(g);P_SPINQ(g)::S(J),XP(f)
- Q(g);XQ(K)::S(J),XP(f)
- Refutation
- S(a);P_SPINS(a)
- Try
- B(H);CHECK
- Vars
- Q(g);P_SPINQ(g)::S(J),XP(f)
- Q(g);XQ(K)::S(J),XP(f)
- Refutation
- S(a);P_SPINS(a)
- Try
- R(A);
- Threat
- P(B),XS(a)
- Vars
- R(b);XS(E)::QAR(K)+B(H),DCHECK
- S(a);N_GUARD::R1(A),XR(b)
- R(b);OGATE::P(B),XR(b)
- Refutation
- S(a);
- Try
- R(G);XQ(g)
- Threat
- S(J),XP(f)
- Vars
- R(b);XS(E)::R(A)+P(B)DCHECK,XS(a)
- Refutation
- B(d);XR(G)
- Try
- Q(K);
- Threat
- DUALS(3)
- Vars
- Q(g);N_GUARD,P_SPINQ(g),XR(G)::S(J),XP(f)
- Refutation
- R(b);P_SPINR(b),XR(G)
- Try
- Q(K);XQ(g)
- Threat
- DUALS(2)
- Vars
- R(b);XS(E)::R(A)+P(B)DCHECK,XS(a)
- Refutation
- B(d);XQ(K)
- Try
- Actual
- Q(K);
- Threat
- B(H)
- Vars
- Q(g);N_GUARD,XQ(K)::S(J),XP(f)
- R(b);XS(E)::R(A)+P(B)DCHECK,XS(a)
- R(b);OGATE,XR(G)::B(H),XR(b)
- S(a);N_GUARD::R1(G),XR(b)
- P(f);::B(H),XP(f)
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).