MESON Chess Problem Database
Problem Display
PID: 265082 (3b4/4r3/N2R1Q2/k3r3/n7/8/2N1B3/R1K5 w - - 0 1)
Ursprung, Karl
Die Schwalbe, 1971
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Rd5#
- 1...Re3
- 2.Rd5#
- 1...Re4
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 2.Qc3#
- 1...Rf5
- 2.Qc3#
- 1...Rg5
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...R5e6
- 2.Qc3#
- 1...R7e6
- 2.Qxd8#
- 1...Ra7
- 2.Qxe5#
- 1...Rd7
- 2.Qxe5#
- 1...Rf7
- 2.Qxe5#
- 1...Rg7
- 2.Qxe5#
- 1...Rh7
- 2.Qxe5#
- 1...Rxe2
- Tries
- 1.Sab4?
- threat
- 2.Ra6#
- 1...Rxe2
- 2.Rd5#
- 1...R7e6
- 2.Qxd8#
- 1...Ra7
- 2.Qxe5#
- 1...Bb6
- 2.Sc6#
- 1...R5e6!
- threat
- 1.Sc5?
- threat
- 2.Sb3#
- 2.Rxa4#
- 2.Ra6#
- 1...Rxc5
- 2.Ra6#
- 1...Re3
- 2.Rxa4#
- 2.Ra6#
- 1...Re4
- 2.Sb3#
- 2.Ra6#
- 1...R5e6
- 2.Sb3#
- 2.Rxa4#
- 2.Qc3#
- 1...R7e6
- 2.Sb3#
- 2.Sb7#
- 2.Rxa4#
- 2.Qxd8#
- 1...Ra7
- 2.Sb3#
- 2.Rxa4#
- 1...Rb7
- 2.Sxb7#
- 2.Rxa4#
- 2.Ra6#
- 1...Bb6
- 2.Sb3#
- 2.Rxa4#
- 1...Rxe2!
- threat
- 1.Sc7?
- threat
- 2.Ra6#
- 1...R5e6
- 2.Qc3#
- 1...R7e6!
- threat
- 1.Qh4?
- threat
- 2.Rxa4#
- 2.Qe1#
- 2.Qxa4#
- 2.Qb4#
- 1...Rxe2
- 2.Qxa4#
- 2.Qb4#
- 1...Rb5
- 2.Rxa4#
- 2.Qxa4#
- 1...Re3
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rc5
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rd5
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rb7
- 2.Rxa4#
- 2.Qxa4#
- 1...Rc7
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Re4!
- threat
- 1.Qf4?
- threat
- 2.Rxa4#
- 2.Qd2#
- 2.Qxa4#
- 2.Qb4#
- 1...Rxe2
- 2.Qxa4#
- 2.Qb4#
- 1...Rb5
- 2.Rxa4#
- 2.Qxa4#
- 1...Re3
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rc5
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rd5
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Rb7
- 2.Rxa4#
- 2.Qxa4#
- 1...Rc7
- 2.Rxa4#
- 2.Qxa4#
- 2.Qb4#
- 1...Re4!
- threat
- 1.Sab4?
- Keys
- 1.Sb8!
- threat
- 2.Ra6#
- 1...Rxe2
- 2.Rd5#
- 1...R5e6
- 2.Qc3#
- 1...R7e6
- 2.Qxd8#
- 1...Ra7
- 2.Qxe5#
- 1...Bb6
- 2.Sc6#
- threat
- 1.Sb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- R(c);N_GUARD,XB(D)::R(F)
- R(c);N_GUARD::R(F)
- R(c);OGATE::QAB(G)
- R(d);OGATE::QAB(G),XB(e)
- R(d);N_GUARD::QAR(G),XR(c)
- Tries
- Try
- S(E);
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,XB(D)::R(F)
- R(d);OGATE::QAB(G),XB(e)
- R(d);N_GUARD::QAR(G),XR(c)
- B(e);SBLOCK::S(E)
- Refutation
- R(c);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(c);P_PINS(C),XS(E)::R1(F)
- Refutation
- R(c);XB(D)
- Try
- S(E);
- Threat
- R1(F)
- Vars
- R(c);OGATE::QAB(G)
- Refutation
- R(d);
- Try
- Q(G);
- Threat
- DUALS(4)
- Refutation
- R(c);
- Try
- Q(G);
- Threat
- DUALS(4)
- Refutation
- R(c);
- Try
- Actual
- S(E);
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,XB(D)::R(F)
- R(c);OGATE::QAB(G)
- R(d);OGATE::QAB(G),XB(e)
- R(d);N_GUARD::QAR(G),XR(c)
- B(e);SBLOCK::S(E)
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