MESON Chess Problem Database
Problem Display
PID: 184332 (2RB4/3P4/r1p1K3/2kBN2R/Pp1p4/3P4/2p4r/2Q5 w - - 0 1)
Lipton, Michael
Die Schwalbe, 1961
#2
10 + 7
| 56 | The Problemist | 1980 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qxc2#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Rxh5
- 2.Qxc2#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...b3
- 2.Qa3#
- 1...Rh1
- Tries
- 1.Sc4?
- threat
- 2.Be7#
- 1...Re2+
- 2.Be4#
- 1...Rxa4!
- threat
- 1.Sg4?
- 1...Re2+
- 2.Be4#
- 1...Rxh5
- 2.Qxc2#
- 1...b3
- 2.Qa3#
- 1...Rh1
- 2.Bxh1#
- 2.Qxc2#
- 1...Rd2
- 2.Bh1#
- 2.Ba2#
- 2.Bg2#
- 2.Bb3#
- 2.Bf3#
- 2.Bc4#
- 2.Be4#
- 2.Bxc6#
- 1...Rf2
- 2.Bf3#
- 1...Rg2
- 2.Ba2#
- 2.Bxg2#
- 2.Bb3#
- 2.Bf3#
- 2.Bc4#
- 2.Be4#
- 2.Bxc6#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Rxa4!
- 1...Re2+
- 1.Sg6?
- 1...Re2+
- 2.Be4#
- 1...Rxh5
- 2.Qxc2#
- 1...b3
- 2.Qa3#
- 1...Rh1
- 2.Bxh1#
- 2.Qxc2#
- 1...Rd2
- 2.Bh1#
- 2.Ba2#
- 2.Bg2#
- 2.Bb3#
- 2.Bf3#
- 2.Bc4#
- 2.Be4#
- 2.Bxc6#
- 1...Rf2
- 2.Bf3#
- 1...Rg2
- 2.Bxg2#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Rxa4!
- 1...Re2+
- 1.Sf7?
- 1...Re2+
- 2.Be4#
- 1...Rxh5
- 2.Qxc2#
- 1...b3
- 2.Qa3#
- 1...Rh1
- 2.Bxh1#
- 2.Qxc2#
- 1...Rd2
- 2.Bh1#
- 2.Ba2#
- 2.Bg2#
- 2.Bb3#
- 2.Bf3#
- 2.Bc4#
- 2.Be4#
- 2.Bxc6#
- 1...Rf2
- 2.Bf3#
- 1...Rg2
- 2.Bxg2#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Rxa4!
- 1...Re2+
- 1.Bg2?
- threat
- 2.Qxc2#
- 1...Rxg2
- 2.Sg4#
- 1...b3
- 2.Qa3#
- 1...Rxa4!
- threat
- 1.Be4?
- 1...Rxh5
- 2.Qxc2#
- 1...b3
- 2.Qa3#
- 1...Re2
- 2.Sf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 1...Rh1
- 2.Qxc2#
- 1...Rd2
- 2.Sf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 1...Rf2
- 2.Sf3#
- 1...Rg2
- 2.Sg4#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Rxc6#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Rxc6#
- 1...Ra8
- 2.Rxc6#
- 1...Rxa4!
- 1...Rxh5
- 1.Bxc6?
- 1...Rxc6+
- 2.Rxc6#
- 1...Rxh5
- 2.Qxc2#
- 1...Rxa4
- 2.Bxa4#
- 1...b3
- 2.Qa3#
- 1...Rh1
- 2.Qxc2#
- 1...Rd2
- 2.Sf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sg6#
- 2.Sf7#
- 1...Rf2
- 2.Sf3#
- 1...Rg2
- 2.Sg4#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bb7#
- 2.Ba8#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...Re2!
- 1...Rxc6+
- 1.Rxh2?
- threat
- 2.Rxc2#
- 2.Qxc2#
- 1...b3
- 2.Qa3#
- 1...Rxa4!
- threat
- 1.Sc4?
- Keys
- 1.Sxc6!
- 1...Re2+
- 2.Be4#
- 1...Rxc6+
- 2.Rxc6#
- 1...Rxh5
- 2.Qxc2#
- 1...Rxa4
- 2.Sa7#
- 1...Rh1
- 2.Bxh1#
- 2.Qxc2#
- 1...Rd2
- 2.Bh1#
- 2.Ba2#
- 2.Bg2#
- 2.Bb3#
- 2.Bf3#
- 2.Bc4#
- 2.Be4#
- 1...Rf2
- 2.Bf3#
- 1...Rg2
- 2.Bxg2#
- 1...Rh3
- 2.Qxc2#
- 1...Rh4
- 2.Qxc2#
- 1...Ra5
- 2.Sxa5#
- 2.Se5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 1...Rb6
- 2.Be7#
- 1...Ra7
- 2.Sxa7#
- 1...Ra8
- 2.Sb8#
- 1...b3
- 2.Qa3#
- 1...Re2+
- 1.Sxc6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD::QAR(A),XP(a)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- R(f);N_GUARD::R1(I),XP(g)
- R(f);SBLOCK::B(J)
- P(c);OGATEB::QAB(A)
- Tries
- Try
- S(E);N_PINP(a),P_PINP(g)
- Threat
- B(J)
- Vars
- R(b);CHECK,N_GUARD::R(F)+B(D)
- Refutation
- R(f);XP(C)
- Try
- S(E);
- Vars
- R(b);CHECK,N_GUARD::R(F)+B(D)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- P(c);OGATEB::QAB(A)
- R(b);N_GUARD::R(F)+B(D)
- R(b);N_GUARD::QAR(A),XP(a)
- R(f);N_GUARD::R1(I),XP(g)
- R(f);SBLOCK::B(J)
- Refutation
- R(f);XP(C)
- Try
- S(E);
- Vars
- R(b);CHECK,N_GUARD::R(F)+B(D)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- P(c);OGATEB::QAB(A)
- R(b);N_GUARD::R(F)+B(D)
- R(b);N_GUARD::R(F)+B(D),XR(b)
- R(b);N_GUARD::QAR(A),XP(a)
- R(f);N_GUARD::R1(I),XP(g)
- R(f);SBLOCK::B(J)
- Refutation
- R(f);XP(C)
- Try
- S(E);
- Vars
- R(b);CHECK,N_GUARD::R(F)+B(D)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- P(c);OGATEB::QAB(A)
- R(b);N_GUARD::R(F)+B(D)
- R(b);N_GUARD::R(F)+B(D),XR(b)
- R(b);N_GUARD::QAR(A),XP(a)
- R(f);N_GUARD::R1(I),XP(g)
- R(f);SBLOCK::B(J)
- Refutation
- R(f);XP(C)
- Try
- B(D);
- Threat
- QAR(A),XP(a)
- Vars
- R(b);N_GUARD,XB(D)::R(F)+S(E)
- P(c);OGATEB::QAB(A)
- Refutation
- R(f);XP(C)
- Try
- B(D);
- Vars
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- P(c);OGATEB::QAB(A)
- R(b);N_GUARD::QAR(A),XP(a)
- R(b);N_GUARD::R(F)+S(E)
- R(f);N_GUARD::R1(I),XP(g)
- R(f);SBLOCK::B(J)
- Refutation
- R(f);XP(C)
- Try
- B(D);P_SPINB(D),XP(g)
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(D)::R1(I),XR(f)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- R(f);N_PINB(D),XP(C)::R(I)+B(D),XR(f)
- P(c);OGATEB::QAB(A)
- R(b);N_GUARD::QAR(A),XP(a)
- R(b);N_GUARD::R(F)+S(E)
- R(f);SBLOCK::B(J)
- R(f);N_PINB(D)::R(I)+B(D)
- R(f);N_PINB(D)::R(I)+B(D),XR(f)
- Refutation
- R(b);P_PINS(E)
- Try
- R(F);XR(b)
- Threat
- DUALS(2)
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- R(f);XP(C)
- Try
- Actual
- S(E);P_SPINS(E),XP(g)
- Vars
- R(b);CHECK,N_GUARD::R(F)+B(D)
- R(f);CHECK,OGATE,P_SPINR(f),XS(E)::R1(I),XR(f)
- R(b);N_GUARD,XR(F)::QAR(A),XP(a)
- R(f);N_PINS(E),XP(C)::R(I)+S(E)
- R(b);N_GUARD::R(F)+B(D)
- R(b);N_GUARD::R(F)+B(D),XR(b)
- R(b);N_GUARD::QAR(A),XP(a)
- R(f);SBLOCK::B(J)
- R(f);N_PINS(E)::R(I)+S(E),XR(f)
- R(f);N_PINS(E)::R(I)+S(E)
- P(c);OGATEB::QAB(A)
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