MESON Chess Problem Database
Problem Display
PID: 166510 (3R2BB/1rp5/1r1p1N1K/Qpp1P3/2Nk1p1R/3P4/2p1P3/b1q5 w - - 0 1)
Visserman, Eeltje
1st Comm., Die Schwalbe, 1961
#2
11 + 11
| 56 | The Problemist | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Rxf4#
- 1...Qa3
- 2.Rxf4#
- 1...Qe3
- 2.Qxa1#
- 1...Qb1
- 2.Rxf4#
- 1...Qd1
- 2.Rxf4#
- 1...Qe1
- 2.Rxf4#
- 1...Qg1
- 2.Rxf4#
- 1...d5
- 2.Rxd5#
- 1...c6
- 2.Rxd6#
- 1...Qb2
- Tries
- 1.Se4?
- threat
- 2.exd6#
- 1...f3+
- 2.Sed2#
- 1...d5+
- 2.e6#
- 1...bxc4
- 2.Qxc5#
- 1...c6
- 2.Rxd6#
- 1...Qg1!
- threat
- 1.Sd5?
- threat
- 2.exd6#
- 1...dxe5+
- 2.Sdxb6#
- 1...Qe3
- 2.Qxa1#
- 1...Qg1
- 2.Rxf4#
- 1...c6!
- threat
- 1.Sh5?
- threat
- 2.exd6#
- 1...d5+
- 2.e6#
- 1...Qe3
- 2.Qxa1#
- 1...Qg1
- 2.Rxf4#
- 1...c6
- 2.Rxd6#
- 1...bxc4!
- threat
- 1.Sd7?
- threat
- 2.exd6#
- 1...dxe5+
- 2.Sdxb6#
- 1...d5+
- 2.e6#
- 1...Qe3
- 2.Qxa1#
- 1...Qg1
- 2.Rxf4#
- 1...bxc4!
- threat
- 1.Sh7?
- threat
- 2.exd6#
- 1...d5+
- 2.e6#
- 1...Qe3
- 2.Qxa1#
- 1...Qg1
- 2.Rxf4#
- 1...c6
- 2.Rxd6#
- 1...bxc4!
- threat
- 1.Se8?
- threat
- 2.exd6#
- 1...d5+
- 2.e6#
- 1...Qe3
- 2.Qxa1#
- 1...Qg1
- 2.Rxf4#
- 1...c6
- 2.Rxd6#
- 1...bxc4!
- threat
- 1.Qxa1+?
- 1...Qb2
- 2.Qxb2#
- 1...Qxa1!
- 1...Qb2
- 1.exd6?
- threat
- 2.Se4#
- 2.Sg4#
- 2.Sd5#
- 2.Sh5#
- 2.Sd7#
- 2.Sh7#
- 2.Se8#
- 1...bxc4
- 2.Sg4#
- 2.Sd5#
- 1...cxd6
- 2.Sd7#
- 1...Qe3
- 2.Se4#
- 2.Qxa1#
- 1...Qg1
- 2.Sg4#
- 2.Rxf4#
- 1...c6
- 2.Sd7#
- 1...Rxd6!
- threat
- 1.Se4?
- Keys
- 1.Sg4!
- threat
- 2.exd6#
- 1...f3+
- 2.Sge3#
- 1...d5+
- 2.e6#
- 1...Qe3
- 2.Qxa1#
- 1...c6
- 2.Rxd6#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::R(D),XP(e)
- Q(b);N_GUARD::QAB(E),XB(a)
- P(i);OGATE,P_PINS(G)::R1(I),XP(i)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
- Tries
- Try
- S(G);N_PINP(e),P_PINP(i)
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(e);CHECK::R(D)+S(G)
- P(i);CHECK::B(K)+P(F)
- P(f);OGATE,XS(C)::QAB1(E),XP(g)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(i);CHECK,XP(F)::R(I)+S(G),XR(h)
- Q(b);N_GUARD::QAB(E),XB(a)
- Q(b);N_GUARD::R(D),XP(e)
- Refutation
- P(k);
- Try
- S(G);
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(i);CHECK::B(K)+P(F)
- Q(b);N_GUARD::QAB(E),XB(a)
- Q(b);N_GUARD::R(D),XP(e)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
- Refutation
- P(f);XS(C)
- Try
- S(G);
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(i);CHECK,XP(F)::R(I)+S(G),XR(h)
- P(i);CHECK,SBLOCK::B(K)+P(F)
- Q(b);N_GUARD::QAB(E),XB(a)
- Q(b);N_GUARD::R(D),XP(e)
- Refutation
- P(f);XS(C)
- Try
- S(G);
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(i);CHECK::B(K)+P(F)
- Q(b);N_GUARD::QAB(E),XB(a)
- Q(b);N_GUARD::R(D),XP(e)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
- Refutation
- P(f);XS(C)
- Try
- S(G);
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(i);CHECK::B(K)+P(F)
- Q(b);N_GUARD::QAB(E),XB(a)
- Q(b);N_GUARD::R(D),XP(e)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
- Refutation
- P(f);XS(C)
- Try
- Q(E);CHECK,XB(a)
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAB(E),XQ(b)
- Refutation
- Q(b);XQ(E)
- Try
- P(F);XP(i)
- Threat
- DUALS(7)
- Vars
- P(k);XP(F)::B(K)+S(G)
- P(k);::B(K)+S(G)
- Refutation
- R(h);P_PINS(G),P_SPINR(h),XP(F)
- Try
- Actual
- S(G);N_PINP(e),P_PINP(i)
- Threat
- B(K)+P(F),XP(i)
- Vars
- P(e);CHECK::R(D)+S(G)
- P(i);CHECK::B(K)+P(F)
- Q(b);N_GUARD::QAB(E),XB(a)
- P(k);N_GUARD,S_CUTR(h)::R(I),XP(i)
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