MESON Chess Problem Database
Problem Display
PID: 235673 (1Q3b2/2B3P1/r2ppPp1/p7/2PR4/q3k3/2PNN1K1/5B2 w - - 0 1)
Hoffmann, Fritz
Mat, 1974
#2
11 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Rd3#
- 2.Qb3#
- 1...Qb2
- 2.Rd3#
- 1...Qb4
- 2.Rd3#
- 1...Qc5
- 2.Rd3#
- 2.Qb3#
- 1...Qa1
- 2.Rd3#
- 1...Qa2
- 2.Rd3#
- 1...Qb3
- 2.Qxb3#
- 1...Qd3
- 2.Rxd3#
- 1...Qa4
- 2.Rd3#
- 1...d5
- 2.Bf4#
- 1...Qc1
- Tries
- 1.Bb6?
- threat
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Rxb6!
- threat
- 1.Qb2?
- threat
- 2.Qxa3#
- 1...Qxb2
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Qc3
- 2.Qxc3#
- 1...Qb4
- 2.Rd3#
- 1...Qc5
- 2.Rd3#
- 2.Qc3#
- 2.Qb3#
- 1...Qa1
- 2.Rd3#
- 1...Qa2
- 2.Rd3#
- 2.Qc3#
- 1...Qb3
- 2.Qxb3#
- 1...Qa4
- 2.Rd3#
- 2.Qc3#
- 1...d5
- 2.Bf4#
- 1...Rb6!
- threat
- 1.Qb4?
- threat
- 2.Re4#
- 2.Qxa3#
- 1...Qxb4
- 2.Rd3#
- 1...Qc3
- 2.Qxc3#
- 1...Qc1
- 2.Rd3#
- 2.Re4#
- 2.Qc3#
- 2.Qb3#
- 1...Qb2
- 2.Rd3#
- 2.Re4#
- 1...Qa1
- 2.Rd3#
- 2.Re4#
- 1...Qa2
- 2.Rd3#
- 2.Re4#
- 2.Qc3#
- 1...Qb3
- 2.Re4#
- 2.Qxb3#
- 1...Qd3
- 2.Rxd3#
- 1...Qa4
- 2.Rd3#
- 2.Re4#
- 2.Qc3#
- 1...Rb6
- 2.Re4#
- 1...d5
- 2.Bf4#
- 1...axb4!
- threat
- 1.Qb5?
- threat
- 2.Qg5#
- 1...Qc5
- 2.Rd3#
- 2.Qb3#
- 1...d5
- 2.Bf4#
- 1...g5
- 2.Qxg5#
- 1...e5!
- threat
- 1.Qb6?
- threat
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Rxb6!
- threat
- 1.Qb7?
- threat
- 2.Qf3#
- 2.Qe4#
- 1...Qd3
- 2.Rxd3#
- 1...d5
- 2.Bf4#
- 1...Rc6!
- threat
- 1.c5?
- threat
- 2.Sc4#
- 1...Qxc5
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Qb4
- 2.Rd3#
- 1...Qa2
- 2.Rd3#
- 1...Qb3
- 2.Qxb3#
- 1...Qa4
- 2.Rd3#
- 1...d5
- 2.Bf4#
- 1...Qc3!
- threat
- 1.g8Q?
- threat
- 2.Qxe6#
- 1...Qd3
- 2.Rxd3#
- 1...Qc5
- 2.Rd3#
- 2.Qb3#
- 1...d5
- 2.Bf4#
- 1...e5!
- threat
- 1.Bb6?
- Keys
- 1.Qc8!
- threat
- 2.Qxe6#
- 1...Qd3
- 2.Rxd3#
- 1...Qc5
- 2.Rd3#
- 1...d5
- 2.Bf4#
- 1...e5
- 2.Qh3#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::R1(G)
- Q(a);N_GUARD::QAR(K),XQ(a)
- Q(a);N_GUARD::R1(G),XQ(a)
- P(e);OGATE::B(I)
- Tries
- Try
- B(I);
- Threat
- B(I)+R(G),DCHECK
- Vars
- Q(a);::B(I)+R(G),DCHECK,XQ(a)
- Refutation
- R(d);XB(I)
- Try
- Q(K);
- Threat
- QAR(K),XQ(a)
- Vars
- Q(a);N_GUARD,XQ(K)::R1(G)
- Q(a);N_GUARD::R1(G),XQ(a)
- Q(a);N_GUARD::QAR2(K),XQ(a)
- Q(a);N_GUARD::R1(G)
- Q(a);N_GUARD::QAR(K),XQ(a)
- P(e);OGATE::B(I)
- Refutation
- R(d);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XQ(K)::R1(G)
- Q(a);N_GUARD::QAR2(K),XQ(a)
- Q(a);N_GUARD::R1(G),XQ(a)
- R(d);::R1(G)
- P(e);OGATE::B(I)
- Refutation
- P(c);XQ(K)
- Try
- Q(K);
- Threat
- QAB(K)
- Vars
- P(e);OGATE::B(I)
- P(g);::QAB(K),XP(g)
- Refutation
- P(f);
- Try
- Q(K);
- Threat
- QAB(K)+R(G),DCHECK
- Vars
- Q(a);::QAB(K)+R(G),DCHECK,XQ(a)
- Refutation
- R(d);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::R1(G),XQ(a)
- P(e);OGATE::B(I)
- Refutation
- R(d);
- Try
- P(F);
- Threat
- S(C)
- Vars
- Q(a);N_GUARD,XP(F)::R1(G)
- Q(a);N_GUARD::R1(G),XQ(a)
- Q(a);N_GUARD::R1(G)
- Q(a);N_GUARD::QAR(K),XQ(a)
- P(e);OGATE::B(I)
- Refutation
- Q(a);
- Try
- P(J);
- Threat
- QAR(J),XP(f)
- Vars
- Q(a);N_GUARD::R1(G),XQ(a)
- P(e);OGATE::B(I)
- Refutation
- P(f);
- Try
- Actual
- Q(K);
- Threat
- QAR(K),XP(f)
- Vars
- Q(a);N_GUARD::R1(G),XQ(a)
- Q(a);N_GUARD::R1(G)
- P(e);OGATE::B(I)
- P(f);OGATE::QAR(K)
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