MESON Chess Problem Database
Problem Display
PID: 139283 (8/6r1/2P1P3/3Q2p1/p2K2N1/2pp4/PRbk2pr/2N3R1 w - - 0 1)
Hjelle, David
Die Schwalbe, 1966
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qxg2#
- 1...Rh3
- 2.Qxg2#
- 1...Rh4
- 2.Qxg2#
- 1...Rh5
- 2.Qxg2#
- 1...Rh6
- 2.Qxg2#
- 1...Rhh7
- 2.Qxg2#
- 1...Rh8
- 2.Qxg2#
- 1...Ra7
- 2.Qxg5#
- 1...Rb7
- 2.Qxg5#
- 1...Rc7
- 2.Qxg5#
- 1...Re7
- 2.Qxg5#
- 1...Rgh7
- 2.Qxg5#
- 1...cxb2
- 2.Qa5#
- 1...Rh1
- Tries
- 1.Ke4?
- threat
- 2.Qxd3#
- 1...cxb2
- 2.Qa5#
- 1...Rd7
- 2.Qxg5#
- 1...Rh3!
- threat
- 1.Kc5?
- threat
- 2.Qxd3#
- 1...Rh3
- 2.Qxg2#
- 1...Rd7
- 2.Qxg5#
- 1...cxb2!
- threat
- 1.Ke5?
- threat
- 2.Qxd3#
- 1...cxb2
- 2.Qa5#
- 1...Rh3
- 2.Qxg2#
- 1...Rd7!
- threat
- 1.Sb3+?
- 1...Ke2
- 2.Qe4#
- 1...axb3!
- 1...Ke2
- 1.Sf2?
- threat
- 2.Se4#
- 2.Rd1#
- 1...cxb2
- 2.Se4#
- 2.Qa5#
- 1...Rh1
- 2.Se4#
- 1...Rh4+!
- threat
- 1.Sxh2?
- threat
- 2.Sf3#
- 2.Qxg2#
- 1...Rd7
- 2.Sf3#
- 1...g4
- 2.Qxg2#
- 1...Rf7!
- threat
- 1.Se3?
- threat
- 2.Sc4#
- 2.Rd1#
- 1...cxb2
- 2.Sc4#
- 2.Qa5#
- 1...Rh1
- 2.Sc4#
- 2.Qxg2#
- 1...Rh4+!
- threat
- 1.Se5?
- threat
- 2.Sf3#
- 2.Sc4#
- 1...Rh3
- 2.Sc4#
- 2.Qxg2#
- 1...Rf7
- 2.Sc4#
- 1...g4
- 2.Sc4#
- 1...Rh4+!
- threat
- 1.Rxc2+?
- 1...dxc2
- 2.Kc4#
- 2.Ke4#
- 2.Kc5#
- 2.Ke5#
- 1...Kxc2!
- 1...dxc2
- 1.Qf3?
- threat
- 2.Rd1#
- 2.Qd1#
- 2.Qf2#
- 2.Qxd3#
- 2.Qe3#
- 1...cxb2
- 2.Qf2#
- 2.Qe3#
- 1...Rh1
- 2.Qd1#
- 2.Qxg2#
- 2.Qf2#
- 2.Qxd3#
- 2.Qe3#
- 1...Rh3
- 2.Rd1#
- 2.Qd1#
- 2.Qxg2#
- 2.Qf2#
- 1...Rf7
- 2.Rd1#
- 2.Qd1#
- 2.Qxd3#
- 2.Qe3#
- 1...Rd7+!
- threat
- 1.Qc4?
- threat
- 2.Qxd3#
- 2.Qxc3#
- 1...cxb2
- 2.Qc3#
- 2.Qb4#
- 1...Rh3
- 2.Qxc3#
- 1...Rd7+!
- threat
- 1.Qe4?
- threat
- 2.Qxd3#
- 2.Qe1#
- 2.Qe3#
- 1...cxb2
- 2.Qe1#
- 2.Qe3#
- 1...Rh3
- 2.Qxg2#
- 2.Qe1#
- 1...Rd7+!
- threat
- 1.Qc5?
- threat
- 2.Qxc3#
- 1...cxb2
- 2.Qb4#
- 2.Qc3#
- 2.Qa5#
- 1...Rd7+!
- threat
- 1.Qe5?
- threat
- 2.Qe1#
- 2.Qe3#
- 1...Rh3
- 2.Qe1#
- 1...Rd7+!
- threat
- 1.Qf5?
- threat
- 2.Qxd3#
- 2.Qf2#
- 1...cxb2
- 2.Qf2#
- 2.Qa5#
- 1...Rh3
- 2.Qf2#
- 1...Rf7
- 2.Qxd3#
- 1...Rd7+!
- threat
- 1.Ke4?
- Keys
- 1.Kc4!
- threat
- 2.Qxd3#
- 1...cxb2
- 2.Qa5#
- 1...Rh3
- 2.Qxg2#
- 1...Rd7
- 2.Qxg5#
- threat
- 1.Kc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- R(d);N_GUARD::QAR(G),XP(c)
- R(d);N_GUARD,P_PINS(F)::QAR(G),XP(c)
- R(i);N_GUARD::QAB(G),XP(h)
- P(e);N_SPINB(a),OGATEB,XR(D)::QAB(G)
- Tries
- Try
- K(E);P-FLIGHT,P_PINP(f)
- Threat
- QAR1(G),XP(f)
- Vars
- P(e);N_SPINB(a),OGATEB,XR(D)::QAB(G)
- R(i);N_GUARD::QAB(G),XP(h)
- Refutation
- R(d);
- Try
- K(E);P_PINP(f),S_FLIGHT
- Threat
- QAR1(G),XP(f)
- Vars
- R(d);N_GUARD::QAR(G),XP(c)
- R(i);N_GUARD::QAB(G),XP(h)
- Refutation
- P(e);N_SPINB(a),XR(D)
- Try
- K(E);P_PINP(f),S_FLIGHT
- Threat
- QAR1(G),XP(f)
- Vars
- P(e);N_SPINB(a),OGATEB,XR(D)::QAB(G)
- R(d);N_GUARD::QAR(G),XP(c)
- Refutation
- R(i);
- Try
- S(A);CHECK
- Vars
- K(b);P-FLIGHT::QAR2(G)
- Refutation
- P(g);XS(A)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(d);::S(F)
- Refutation
- R(d);CHECK
- Try
- S(F);XR(d)
- Threat
- DUALS(2)
- Vars
- R(i);P_PINQ(G)::S(F)
- P(h);::QAR(G),XP(c)
- Refutation
- R(i);
- Try
- S(F);
- Threat
- DUALS(2)
- Refutation
- R(d);CHECK
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(i);::S(F)
- P(h);::S(F)
- Refutation
- R(d);CHECK
- Try
- R(D);CHECK,XB(a)
- Refutation
- K(b);P-FLIGHT,XR(D)
- Try
- Q(G);
- Threat
- DUALS(5)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(d);::QAB1(G),XP(e)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- DUALS(3)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- QAB1(G),XP(e)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(d);::QAB1(G)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR2(G)
- R(i);::QAR1(G),XP(f)
- Refutation
- R(i);CHECK
- Try
- Actual
- K(E);P-FLIGHT,P_PINP(f)
- Threat
- QAR1(G),XP(f)
- Vars
- P(e);N_SPINB(a),OGATEB,XR(D)::QAB(G)
- R(d);N_GUARD::QAR(G),XP(c)
- R(i);N_GUARD::QAB(G),XP(h)
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