MESON Chess Problem Database
Problem Display
PID: 270189 (2rb1N2/8/Q2p1rp1/2kP1bp1/3R2p1/2P3B1/3K4/8 w - - 0 1)
Witte, Alberto
The Observer, 1958
(First published on Sun Oct 26 1958)
#2
7 + 9
| 17397 | Ling Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Sd7#
- 1...Rf7
- 2.Bxd6#
- 1...Rxf8
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...Re6
- Tries
- 1.Kd1?
- 1...Rxf8
- 2.Bxd6#
- 1...Re6
- 2.Sd7#
- 1...Rf7
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...Bc2+!
- 1...Rxf8
- 1.Ke1?
- 1...Rxf8
- 2.Bxd6#
- 1...Rf7
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...Re6+!
- 1...Rxf8
- 1.Ke3?
- 1...Rxf8
- 2.Bxd6#
- 1...Rf7
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...Re6+!
- 1...Rxf8
- 1.Se6+?
- 1...Bxe6
- 2.Bxd6#
- 1...Rxe6!
- 1...Bxe6
- 1.Bh2?
- 1...Rxf8
- 2.Bxd6#
- 1...Re6
- 2.Sd7#
- 1...Rf7
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...g3!
- 1...Rxf8
- 1.Rd3?
- threat
- 2.Bf2#
- 1...Re6
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Bxd3!
- threat
- 1.Qa4?
- threat
- 2.Qb4#
- 1...Rb8
- 2.Qc6#
- 1...Ba5
- 2.Qxa5#
- 1...Kb6!
- threat
- 1.Qa7+?
- 1...Kb5
- 2.Rb4#
- 1...Bb6!
- 1...Kb5
- 1.Kd1?
- Keys
- 1.Kc1!
- 1...Rxf8
- 2.Bxd6#
- 1...Re6
- 2.Sd7#
- 1...Rf7
- 2.Bxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Rc7
- 2.Qa5#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bb1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Be6
- 2.Bxd6#
- 1...Bd7
- 2.Sxd7#
- 1...Ba5
- 2.Qxa5#
- 1...Bb6
- 2.Qc4#
- 1...Bc7
- 2.Qc6#
- 1...Be7
- 2.Qa5#
- 1...Rxf8
- 1.Kc1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(f);S_CUTB(c)::S(G)
- R(f);N_GUARD::B(C),XP(e)
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD,P_PINP(B)::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(f);S_CUTB(c)::S(G)
- R(f);N_GUARD::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
- Refutation
- B(c);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(f);N_GUARD::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD,P_PINP(B)::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
- Refutation
- R(f);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(f);N_GUARD::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
- Refutation
- R(f);CHECK
- Try
- S(G);CHECK
- Vars
- B(c);XS(G)::B(C),XP(e)
- Refutation
- R(f);XS(G)
- Try
- B(C);
- Vars
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(f);S_CUTB(c)::S(G)
- R(f);N_GUARD::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD,P_PINP(B)::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
- Refutation
- P(a);
- Try
- R(D);
- Threat
- B(C)
- Vars
- R(f);S_CUTB(c)::S(G)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- Refutation
- B(c);XR(D)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- R(h);N_GUARD::QAR1(F)
- B(i);N_GUARD,P_PINP(B)::QAR2(F),XB(i)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(F);CHECK
- Vars
- K(b);N_GUARD,P-FLIGHT,S_CUTB(i)::R1(D)
- Refutation
- B(i);P_SPINB(i)
- Try
- Actual
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::B(C),XP(e)
- R(f);S_CUTB(c)::S(G)
- R(f);N_GUARD::B(C),XP(e)
- R(h);N_GUARD::QAR1(F),XR(h)
- R(h);S_CUTB(i)::QAR2(F)
- R(h);N_GUARD::QAR1(F)
- B(c);N_GUARD::S(G)
- B(c);S_CUTR(f)::B(C),XP(e)
- B(c);N_GUARD::S(G),XB(c)
- B(i);N_GUARD::QAR2(F),XB(i)
- B(i);SBLOCK::QAR1(F)
- B(i);S_CUTR(h)::QAR1(F)
- B(i);N_GUARD::QAR2(F)
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