MESON Chess Problem Database
Problem Display
PID: 146679 (8/4pK1N/8/q1Q3Np/3rPBkp/1p3R1R/8/8 w - - 0 1)
Senkus, Raimondas
Australian Chess Problem Magazine, 1993
#2
8 + 7
| 3713 | Snap | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Qf5#
- 1...Qd2
- 2.Qf5#
- 1...Qc3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 1...Qd8
- 2.Qf5#
- 1...Qa1
- 2.Qf5#
- 1...Qa2
- 2.Qf5#
- 1...Qa3
- 2.Qf5#
- 1...Qa4
- 2.Qf5#
- 1...Qa6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 1...Qa8
- 2.Qf5#
- 1...Rd3
- 2.Qg1#
- 1...Ra4
- 2.Qg1#
- 1...Rb4
- 2.Qg1#
- 1...Rc4
- 2.Qg1#
- 1...Rd5
- 2.Qg1#
- 1...Rd6
- 2.Qg1#
- 1...Rd7
- 2.Qg1#
- 1...Rd8
- 2.Qg1#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Qe1
- Tries
- 1.Bc1?
- threat
- 2.Rf4#
- 1...Rxe4
- 2.Qg1#
- 1...Qd2
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 1...e5
- 2.Sf6#
- 1...Rd2!
- threat
- 1.Bd2?
- threat
- 2.Rf4#
- 1...Qxd2
- 2.Qf5#
- 1...Rxe4
- 2.Qg1#
- 1...Qc7
- 2.Qf5#
- 1...e5
- 2.Sf6#
- 1...Rxd2!
- threat
- 1.Bh2?
- threat
- 2.Rf4#
- 1...Rxe4
- 2.Qg1#
- 1...Qd2
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 1...e5!
- threat
- 1.Be3?
- threat
- 2.Rf4#
- 1...Qc7
- 2.Qf5#
- 1...e5
- 2.Sf6#
- 1...Rxe4!
- threat
- 1.Bg3?
- threat
- 2.Rf4#
- 2.Rxh4#
- 1...Rxe4
- 2.Rxh4#
- 1...Qd2
- 2.Rxh4#
- 2.Qf5#
- 1...Qc7
- 2.Rxh4#
- 2.Qf5#
- 1...e5
- 2.Rxh4#
- 1...hxg3!
- threat
- 1.Be5?
- threat
- 2.Rf4#
- 1...Rxe4
- 2.Qg1#
- 1...Qd2!
- threat
- 1.Bc7?
- threat
- 2.Rf4#
- 1...Qxc7
- 2.Qf5#
- 1...Rxe4
- 2.Qg1#
- 1...Qd2
- 2.Qf5#
- 1...Rd6
- 2.Qg1#
- 1...e5!
- threat
- 1.Bb8?
- threat
- 2.Rf4#
- 1...Rxe4
- 2.Qg1#
- 1...Qd2
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 1...Rd6
- 2.Qg1#
- 1...e5!
- threat
- 1.Qc8+?
- 1...Qf5+
- 2.Qxf5#
- 1...e6
- 2.Sf6#
- 1...Rd7!
- 1...Qf5+
- 1.Bc1?
- Keys
- 1.Bd6!
- threat
- 2.Rf4#
- 1...Rxe4
- 2.Qg1#
- 1...Rxd6
- 2.Qg1#
- 1...exd6
- 2.Sf6#
- 1...Qd2
- 2.Qf5#
- 1...e5
- 2.Qc8#
- threat
- 1.Bd6!
Anticipated by 18693(1957)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(e);N_GUARD::QAB1(E)
- R(b);OGATE::QAR(E)
- P(g);N_GUARD::S(H)
- Tries
- Try
- B(D);
- Threat
- R1(A)
- Vars
- R(b);OGATE,XP(C)::QAR(E)
- Q(e);N_GUARD::QAB1(E)
- P(g);N_GUARD::S(H)
- Refutation
- R(b);
- Try
- B(D);
- Threat
- R1(A)
- Vars
- Q(e);N_GUARD,XB(D)::QAB1(E)
- R(b);OGATE,XP(C)::QAR(E)
- Q(e);N_GUARD::QAB1(E)
- P(g);N_GUARD::S(H)
- Refutation
- R(b);XB(D)
- Try
- B(D);
- Threat
- R1(A)
- Vars
- R(b);OGATE,XP(C)::QAR(E)
- Q(e);N_GUARD::QAB1(E)
- Refutation
- P(g);
- Try
- B(D);
- Threat
- R1(A)
- Vars
- Q(e);N_GUARD::QAB1(E)
- P(g);N_GUARD::S(H)
- Refutation
- R(b);XP(C)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);XP(C)::R1(B),XP(d)
- P(g);::R1(B),XP(d)
- Refutation
- P(d);XB(D)
- Try
- B(D);
- Threat
- R1(A)
- Vars
- R(b);OGATE,XP(C)::QAR(E)
- Refutation
- Q(e);
- Try
- B(D);
- Threat
- R1(A)
- Vars
- Q(e);N_GUARD,XB(D)::QAB1(E)
- R(b);OGATE,XP(C)::QAR(E)
- Q(e);N_GUARD::QAB1(E)
- R(b);OGATE::QAR(E)
- Refutation
- P(g);
- Try
- B(D);
- Threat
- R1(A)
- Vars
- R(b);OGATE,XP(C)::QAR(E)
- Q(e);N_GUARD::QAB1(E)
- R(b);OGATE::QAR(E)
- Refutation
- P(g);
- Try
- Q(E);CHECK
- Vars
- Q(e);CHECK,N_GUARD,P_SPINQ(e)::QAB1(E),XQ(e)
- P(g);P_SPINP(g)::S(H)
- Refutation
- R(b);P_SPINR(b)
- Try
- Actual
- B(D);
- Threat
- R1(A)
- Vars
- R(b);OGATE,XP(C)::QAR(E)
- R(b);OGATE,XB(D)::QAR(E)
- P(g);N_GUARD,XB(D)::S(H)
- Q(e);N_GUARD::QAB1(E)
- P(g);N_GUARD,S_CUTQ(e)::QAB(E)
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