MESON Chess Problem Database
Problem Display
PID: 250068 (7r/3P4/8/1R5p/QN2k1qR/K4p2/4N3/1bB1r2B w - - 0 1)
Gothelf, J
2nd Prize, Neue Leipziger Zeitung, 1927
#2
9 + 7
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Rxf4#
- 1...Rh7
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Qf4
- Tries
- 1.Qb3?
- threat
- 2.Bxf3#
- 2.Qc4#
- 2.Qd5#
- 2.Qe6#
- 2.Qxb1#
- 2.Qe3#
- 2.Qxf3#
- 1...Rxc1
- 2.Bxf3#
- 2.Qe6#
- 2.Qxf3#
- 1...Rxh1
- 2.Qc4#
- 2.Qd5#
- 2.Qe6#
- 2.Qxb1#
- 2.Qe3#
- 1...Rxe2
- 2.Qc4#
- 2.Qd5#
- 1...Rd1
- 2.Bxf3#
- 2.Qe6#
- 2.Qe3#
- 2.Qxf3#
- 1...Rf1
- 2.Qc4#
- 2.Qd5#
- 2.Qe6#
- 2.Qxb1#
- 2.Qe3#
- 1...Rh6
- 2.Bxf3#
- 2.Qc4#
- 2.Qd5#
- 2.Qxb1#
- 2.Qe3#
- 2.Qxf3#
- 1...Rc8
- 2.Bxf3#
- 2.Qd5#
- 2.Qe6#
- 2.Qe3#
- 2.Qxf3#
- 1...Re8
- 2.Bxf3#
- 2.Qc4#
- 2.Qd5#
- 2.Qxb1#
- 2.Qe3#
- 2.Qxf3#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Rf8
- 2.Qc4#
- 2.Qd5#
- 2.Qe6#
- 2.Qxb1#
- 2.Qe3#
- 1...Ba2
- 2.Bxf3#
- 2.Qc2#
- 2.Qd3#
- 2.Qe3#
- 2.Qxf3#
- 1...Bc2
- 2.Bxf3#
- 2.Qxc2#
- 2.Qc4#
- 2.Qd5#
- 2.Qe6#
- 2.Qe3#
- 2.Qxf3#
- 1...Bd3
- 2.Qd5#
- 2.Qe6#
- 2.Qxd3#
- 1...Ra8+!
- threat
- 1.Qa5?
- threat
- 2.Re5#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Rxe2!
- threat
- 1.Qa7?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Qe3#
- 2.Qd4#
- 2.Qb7#
- 1...Qxh4
- 2.Sc3#
- 2.Qe3#
- 2.Qd4#
- 2.Qb7#
- 1...Rxc1
- 2.Qd4#
- 1...Rd1
- 2.Sc3#
- 2.Sg3#
- 2.Qe3#
- 1...Rg1
- 2.Sc3#
- 2.Qe3#
- 2.Qd4#
- 2.Qb7#
- 1...Rh6
- 2.Sc3#
- 2.Sg3#
- 2.Qe3#
- 2.Qd4#
- 1...Ra8
- 2.Sc3#
- 2.Sg3#
- 2.Qxa8#
- 1...Rb8
- 2.Sc3#
- 2.Sg3#
- 2.Qe3#
- 2.Qd4#
- 1...Rc8
- 2.Sg3#
- 2.Qe3#
- 2.Qd4#
- 1...Ba2
- 2.Sc3#
- 2.Sg3#
- 2.Qe3#
- 2.Qd4#
- 1...Rxe2!
- threat
- 1.d8Q?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qe7#
- 2.Qaa8#
- 2.Qd4#
- 2.Qd5#
- 1...Qxh4
- 2.Sc3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qxh4#
- 2.Qaa8#
- 2.Qd4#
- 2.Qd5#
- 1...Rxc1
- 2.Sc2#
- 2.Qe7#
- 2.Qd4#
- 1...Rxe2
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qaa8#
- 2.Qd5#
- 1...Rd1
- 2.Sc3#
- 2.Sg3#
- 2.Sd3#
- 2.Qe7#
- 1...Rg1
- 2.Sc3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qe7#
- 2.Qaa8#
- 2.Qd4#
- 2.Qd5#
- 1...Rh6
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qd4#
- 2.Qd5#
- 1...Rh7
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qd4#
- 2.Qd5#
- 1...Re8
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qaa8#
- 2.Qd4#
- 2.Qd5#
- 2.Qxe8#
- 1...Ba2
- 2.Sc3#
- 2.Sg3#
- 2.Sxa2#
- 2.Qc2#
- 2.Qd3#
- 2.Qd4#
- 1...Bc2
- 2.Sc3#
- 2.Sg3#
- 2.Sxc2#
- 2.Qxc2#
- 2.Qe7#
- 2.Qaa8#
- 2.Qd4#
- 2.Qd5#
- 1...Bd3
- 2.Sc3#
- 2.Sg3#
- 2.Sxd3#
- 2.Qe7#
- 2.Qaa8#
- 2.Qxd3#
- 2.Qd4#
- 2.Qd5#
- 1...Rxd8!
- threat
- 1.d8R?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Rd4#
- 2.Qa8#
- 1...Qxh4
- 2.Sc3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Rd4#
- 2.Qa8#
- 1...Rxc1
- 2.Sc2#
- 1...Rxe2
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Qa8#
- 1...Rd1
- 2.Sc3#
- 2.Sg3#
- 2.Sd3#
- 1...Rg1
- 2.Sc3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Rd4#
- 2.Qa8#
- 1...Rh6
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Rd4#
- 1...Rh7
- 2.Sc3#
- 2.Sg3#
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sa6#
- 2.Sc6#
- 2.Rd4#
- 1...Ba2
- 2.Sc3#
- 2.Sg3#
- 2.Sxa2#
- 2.Rd4#
- 2.Qc2#
- 1...Bc2
- 2.Sc3#
- 2.Sg3#
- 2.Sxc2#
- 2.Rd4#
- 2.Qxc2#
- 2.Qa8#
- 1...Bd3
- 2.Sc3#
- 2.Sg3#
- 2.Sxd3#
- 2.Rd4#
- 2.Qa8#
- 1...Rxd8!
- threat
- 1.Qb3?
- Keys
- 1.Sf4!
- threat
- 2.Sa2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sa6#
- 2.Sc6#
- 1...Re3+
- 2.Sbd3#
- 1...Kd4
- 2.Sa2#
- 1...Qxd7
- 2.Se6#
- 1...Qxf4
- 2.Rxf4#
- 1...Rxc1
- 2.Sc2#
- 1...Qe6
- 2.Sxe6#
- 1...Qg1
- 2.Sg2#
- 1...Qg7
- 2.Sg6#
- 1...Qg8
- 2.Sg6#
- 1...Rd1
- 2.Sbd3#
- 1...Ra8
- 2.Sa6#
- 1...Rc8
- 2.Sc6#
- 1...Ba2
- 2.Sxa2#
- 1...Bc2
- 2.Sxc2#
- 1...Bd3
- 2.Sbxd3#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 11
- REMOVED MATES = 1
- Sets
- Q(e);OGATE::R1(G),XQ(e)
- R(g);N_GUARD::QAB(E)
- R(g);N_GUARD,P_PINQ(E)::QAB(E),XR(g)
- R(g);OGATE::PXR(g)=Q
- B(a);N_GUARD::QAB(E)
- B(a);N_GUARD::QAB(E),XB(a)
- Tries
- Try
- Q(E);
- Threat
- DUALS(7)
- Refutation
- R(g);CHECK
- Try
- Q(E);
- Threat
- R1(H)
- Vars
- R(g);OGATE::PXR(g)=Q
- Refutation
- R(b);XS(C)
- Try
- Q(E);
- Threat
- DUALS(5)
- Vars
- R(b);XB(A)::QAR1(E)
- Refutation
- R(b);XS(C)
- Try
- P(I);
- Threat
- DUALS(11)
- Refutation
- R(g);XQ(I)
- Try
- P(I);
- Threat
- DUALS(9)
- Vars
- R(b);XB(A)::QAR(E)+S(F)
- Refutation
- R(g);XR(I)
- Try
- Actual
- S(C);N_PINQ(e)
- Threat
- DUALS(5)
- Vars
- R(b);CHECK::QAR(E)+S(F)
- K(d);N_SPINP(c),P-FLIGHT::QAR(E)+S(F)
- Q(e);XP(I)::R(G)+S(C)
- Q(e);OGATE,P_SPINQ(e),XS(C)::R1(G),XQ(e)
- R(b);XB(A)::QAR(E)+S(F)
- Q(e);::R(G)+S(C),XQ(e)
- Q(e);::R(G)+S(C)
- R(b);::QAR(E)+S(F)
- R(g);P_PINQ(E)::QAR(E)+S(F)
- R(g);::QAR(E)+S(F)
- B(a);::QAR(E)+S(F),XB(a)
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