MESON Chess Problem Database
Problem Display
PID: 82287 (n7/4K3/4pp2/3k1r2/1PRN2N1/1Ppr1Pp1/8/4nQ1B w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1986
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Rc5#
- 1...Re5
- 2.Sxf6#
- 1...Rxd4
- Tries
- 1.Se2?
- threat
- 2.Rc5#
- 1...Rdxf3
- 2.Sxc3#
- 1...Rfxf3
- 2.Sf4#
- 1...Sxf3!
- threat
- 1.Sb5?
- threat
- 2.Rc5#
- 1...Rdxf3
- 2.Sxc3#
- 1...Sxf3
- 2.Qxd3#
- 1...Rfxf3!
- threat
- 1.Sxf5?
- threat
- 2.Rc5#
- 1...Rxf3
- 2.Sfe3#
- 1...Sxf3
- 2.Qxd3#
- 1...exf5!
- threat
- 1.Sxe6?
- threat
- 2.Rc5#
- 1...Rfxf3
- 2.Sf4#
- 1...Sxf3
- 2.Qxd3#
- 1...Rdxf3!
- threat
- 1.Se3+?
- 1...Ke5
- 2.Sc6#
- 1...Rxe3!
- 1...Ke5
- 1.Sxf6+?
- 1...Ke5
- 2.Sc6#
- 1...Rxf6!
- 1...Ke5
- 1.Qe2?
- threat
- 2.Qe4#
- 2.Qxe6#
- 1...Rdxf3
- 2.Qxe6#
- 1...Rxd4
- 2.Rc5#
- 2.Qxe6#
- 1...Rfxf3
- 2.Sxf6#
- 2.Qxe6#
- 1...Sxf3
- 2.Qxe6#
- 1...Rf4
- 2.Qxe6#
- 1...Re5
- 2.Sxf6#
- 1...Sc7
- 2.Qe4#
- 1...e5
- 2.Qe4#
- 1...Re3!
- threat
- 1.Qxd3?
- threat
- 2.Rc5#
- 2.Qe4#
- 1...Rxf3
- 2.Rc5#
- 1...Sxf3
- 2.Sc2#
- 2.Se2#
- 2.Sxf3#
- 2.Sb5#
- 2.Sxf5#
- 2.Sc6#
- 2.Sxe6#
- 2.Rc5#
- 1...Rf4
- 2.Rc5#
- 1...Re5
- 2.Sxf6#
- 2.Rc5#
- 1...Sxd3!
- threat
- 1.Qxe1?
- threat
- 2.Qe4#
- 2.Qxe6#
- 1...Rdxf3
- 2.Qxe6#
- 1...Rxd4
- 2.Rc5#
- 2.Qxe6#
- 1...Rfxf3
- 2.Sxf6#
- 2.Qxe6#
- 1...Rf4
- 2.Qxe6#
- 1...Re5
- 2.Sxf6#
- 1...Sc7
- 2.Qe4#
- 1...e5
- 2.Qe4#
- 1...Re3!
- threat
- 1.Se2?
- Keys
- 1.Sc6!
- threat
- 2.Rc5#
- 1...Rdxf3
- 2.Se3#
- 1...Rfxf3
- 2.Sxf6#
- 1...Sxf3
- 2.Qxd3#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(c);SBLOCK,XS(G)::R1(F)
- R(f);N_GUARD,SBLOCK::S(H),XP(h)
- Tries
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::S(G),XP(b)
- R(f);N_GUARD,P_SPINR(f),XP(D)::S(G)
- Refutation
- S(a);P_SPINS(a),XP(D)
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::S(G),XP(b)
- S(a);N_GUARD,P_SPINS(a),XP(D)::QAR2(A),XR(c)
- Refutation
- R(f);P_SPINR(f),XP(D)
- Try
- S(G);XR(f)
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::S(G)
- S(a);N_GUARD,P_SPINS(a),XP(D)::QAR2(A),XR(c)
- Refutation
- P(g);XS(G)
- Try
- S(G);XP(g)
- Threat
- R1(F)
- Vars
- R(f);N_GUARD,P_SPINR(f),XP(D)::S(G)
- S(a);N_GUARD,P_SPINS(a),XP(D)::QAR2(A),XR(c)
- Refutation
- R(c);P_SPINR(c),XP(D)
- Try
- S(H);CHECK
- Vars
- K(e);P-FLIGHT::S(G)
- Refutation
- R(c);XS(H)
- Try
- S(H);CHECK,XP(h)
- Vars
- K(e);P-FLIGHT::S(G)
- Refutation
- R(f);XS(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINR(c),XP(D)::QAB1(A),XP(g)
- S(a);P_SPINS(a),XP(D)::QAB1(A),XP(g)
- R(f);::QAB1(A),XP(g)
- R(f);N_GUARD::S(H),XP(h)
- S(i);::QAB1(A)
- P(g);::QAB1(A)
- Refutation
- R(c);
- Try
- Q(A);XR(c)
- Threat
- DUALS(2)
- Vars
- R(f);P_SPINR(f),XP(D)::R1(F)
- R(f);::R1(F)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);XS(a)
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINR(c),XP(D)::QAB1(A),XP(g)
- R(f);::QAB1(A),XP(g)
- R(f);N_GUARD::S(H),XP(h)
- S(i);::QAB1(A)
- P(g);::QAB1(A)
- Refutation
- R(c);
- Try
- Actual
- S(G);
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::S(H)
- R(f);N_GUARD,P_SPINR(f),XP(D)::S(H),XP(h)
- S(a);N_GUARD,P_SPINS(a),XP(D)::QAR2(A),XR(c)
Developed and maintained by Brian Stephenson.
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