MESON Chess Problem Database
Problem Display
PID: 235279 (2B1n2K/3r1p2/5RPB/2N2nP1/Rr1p1k2/q1b1pNpP/2p5/3b3Q w - - 0 1)
Hoffmann, Fritz
Schach, 1971
#2
11 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Rxf5#
- 1...Ra7
- 2.Rxf5#
- 1...Rb7
- 2.Rxf5#
- 1...Rc7
- 2.Rxf5#
- 1...Re7
- 2.Rxf5#
- 1...Rd8
- 2.Rxf5#
- 1...Rd6
- Tries
- 1.Se1?
- threat
- 2.Sed3#
- 2.Scd3#
- 2.Qe4#
- 1...Ke5
- 2.Sed3#
- 2.Scd3#
- 2.Qe4#
- 1...Bxe1
- 2.Qe4#
- 1...Sxf6
- 2.Sed3#
- 2.Scd3#
- 1...e2
- 2.Qe4#
- 1...g2
- 2.Qh2#
- 1...c1S
- 2.Qe4#
- 1...Re7
- 2.Sed3#
- 2.Scd3#
- 2.Rxf5#
- 1...Be2
- 2.Qe4#
- 1...Bf3
- 2.Sed3#
- 1...Ba1
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Sd6
- 2.Sed3#
- 2.Scd3#
- 1...d3!
- threat
- 1.Sd2?
- threat
- 2.Sd3#
- 2.Qe4#
- 1...Ke5
- 2.Sd3#
- 2.Qe4#
- 1...Bxd2
- 2.Qe4#
- 1...Sxf6
- 2.Sd3#
- 1...exd2
- 2.Qe4#
- 1...e2
- 2.Qe4#
- 1...g2
- 2.Qh2#
- 1...c1S
- 2.Qe4#
- 1...Re7
- 2.Sd3#
- 2.Rxf5#
- 1...Be2
- 2.Qe4#
- 1...Bf3
- 2.Sd3#
- 1...Ba1
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Sd6
- 2.Sd3#
- 1...d3!
- threat
- 1.Sh4?
- threat
- 2.Sd3#
- 2.Rxf5#
- 2.Qe4#
- 1...Ke5
- 2.Sd3#
- 2.Qe4#
- 1...Sxf6
- 2.Sd3#
- 1...fxg6
- 2.Sxg6#
- 2.Sd3#
- 2.Qe4#
- 1...e2
- 2.Qe4#
- 1...g2
- 2.Qh2#
- 1...c1S
- 2.Rxf5#
- 2.Qe4#
- 1...Rd5
- 2.Sd3#
- 2.Qe4#
- 1...Re7
- 2.Sd3#
- 2.Rxf5#
- 1...Be2
- 2.Rxf5#
- 2.Qe4#
- 1...Bf3
- 2.Rxf5#
- 1...Bg4
- 2.Sd3#
- 2.Qe4#
- 1...Ba1
- 2.Rxf5#
- 2.Qe4#
- 1...Be1
- 2.Rxf5#
- 2.Qe4#
- 1...Bb2
- 2.Rxf5#
- 2.Qe4#
- 1...Bd2
- 2.Rxf5#
- 2.Qe4#
- 1...Sd6
- 2.Sd3#
- 1...Sg7
- 2.Sd3#
- 2.Qe4#
- 1...d3!
- threat
- 1.Se5?
- threat
- 2.Scd3#
- 2.Sed3#
- 2.Qe4#
- 1...Kxe5
- 2.Sd3#
- 2.Qe4#
- 1...Sxf6
- 2.Scd3#
- 2.Sed3#
- 1...e2
- 2.Qe4#
- 1...g2
- 2.Qh2#
- 1...c1S
- 2.Qe4#
- 1...Be2
- 2.Qe4#
- 1...Bf3
- 2.Sed3#
- 1...Ba1
- 2.Qe4#
- 1...Be1
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Sd6
- 2.Scd3#
- 2.Sed3#
- 1...d3!
- threat
- 1.Se1?
- Keys
- 1.Sxd4!
- threat
- 2.Sd3#
- 2.Rxf5#
- 2.Qe4#
- 1...Ke5
- 2.Qe4#
- 1...Rbxd4
- 2.Sd3#
- 1...Rdxd4
- 2.Rxf5#
- 1...Bxd4
- 2.Qe4#
- 1...Sxf6
- 2.Sd3#
- 1...fxg6
- 2.Sd3#
- 2.Qe4#
- 1...e2
- 2.Qe4#
- 1...g2
- 2.Qh2#
- 1...c1S
- 2.Rxf5#
- 2.Qe4#
- 1...Rd5
- 2.Sd3#
- 2.Qe4#
- 1...Re7
- 2.Sd3#
- 2.Rxf5#
- 1...Be2
- 2.Rxf5#
- 2.Qe4#
- 1...Bf3
- 2.Rxf5#
- 1...Bg4
- 2.Sd3#
- 2.Qe4#
- 1...Ba1
- 2.Rxf5#
- 2.Qe4#
- 1...Be1
- 2.Rxf5#
- 2.Qe4#
- 1...Bb2
- 2.Rxf5#
- 2.Qe4#
- 1...Bd2
- 2.Rxf5#
- 2.Qe4#
- 1...Sd6
- 2.Sd3#
- 1...Sg7
- 2.Sd3#
- 2.Qe4#
- threat
- 1.Sxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 6
- Sets
- R(k);::R1(G),XS(j)
- Tries
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- B(d);XS(B)::QAR1(A)
- P(e);::QAR1(A)
- P(f);OGATEB::QAB(A)
- P(b);::QAR1(A)
- B(a);::QAR1(A)
- B(a);::S(B)
- B(d);::QAR1(A)
- Refutation
- P(h);P_PINR(G),P_SPINR(g)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- B(d);XS(B)::QAR1(A)
- S(m);N_SPINS(j),XR(G)::S(E)
- P(e);XS(B)::QAR1(A)
- P(e);::QAR1(A)
- P(f);OGATEB::QAB(A)
- P(b);::QAR1(A)
- B(a);::QAR1(A)
- B(a);::S(E)
- B(d);::QAR1(A)
- S(m);::S(E)
- Refutation
- P(h);P_PINR(G),P_SPINR(g)
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- S(m);N_SPINS(j),XR(G)::S(E)
- P(e);::QAR1(A)
- P(f);OGATEB::QAB(A)
- B(a);::R1(G),XS(j)
- S(m);::S(E)
- Refutation
- P(h);P_PINR(G),P_SPINR(g)
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- P(e);::QAR1(A)
- P(f);OGATEB::QAB(A)
- P(b);::QAR1(A)
- B(a);::QAR1(A)
- B(a);::S(B)
- B(d);::QAR1(A)
- Refutation
- P(h);P_SPINR(g)
- Try
- Actual
- S(B);XP(h)
- Threat
- DUALS(3)
- Vars
- K(i);N_SPINS(j),S_FLIGHT::QAR1(A)
- R(g);P_SPINR(g),XS(B)::S(E)
- R(k);XS(B)::R1(G),XS(j)
- B(d);P_PINR(G),XS(B)::QAR1(A)
- S(m);N_SPINS(j),XR(G)::S(E)
- P(e);::QAR1(A)
- P(f);OGATEB::QAB(A)
- B(a);::R1(G),XS(j)
- S(m);::S(E)
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).