MESON Chess Problem Database
Problem Display
PID: 225716 (8/3p4/p2B4/K7/N1kb4/1RnR4/2P5/1qN4Q w - - 0 1)
Pal, Julius
Praca, 1953
#2
8 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Rb4#
- 1...Qxc2
- 2.Rb4#
- 1...Qa1
- 2.Rb4#
- 1...Qxc1
- 2.Rb4#
- 1...Qb2
- 2.Sxb2#
- 1...Qxb3
- 2.cxb3#
- 1...Bg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 1...Be5
- 2.Sb6#
- 1...Bb6+
- 2.Sxb6#
- 1...Bf6
- 2.Sb6#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 1...Bh8
- 2.Sb6#
- 1...Qa2
- Tries
- 1.Qg2?
- 1...Bb6+
- 2.Sxb6#
- 1...Qxc2
- 2.Rb4#
- 1...Qxc1
- 2.Rb4#
- 1...Qxb3
- 2.cxb3#
- 1...Sxa4
- 2.Qg8#
- 1...Se4
- 2.Qg8#
- 1...Qa2
- 2.Rb4#
- 1...Qa1
- 2.Rb4#
- 1...Qb2
- 2.Sxb2#
- 1...Bg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 1...Be5
- 2.Sb6#
- 1...Bf6
- 2.Sb6#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 1...Bh8
- 2.Sb6#
- 1...Sd1
- 2.Qg8#
- 1...Sa2
- 2.Qg8#
- 1...Se2
- 2.Qg8#
- 1...Sb5
- 2.Qg8#
- 1...Sd5!
- 1...Bb6+
- 1.Qf3?
- 1...Bb6+
- 2.Sxb6#
- 1...Qxc2
- 2.Rb4#
- 1...Qxc1
- 2.Rb4#
- 1...Qxb3
- 2.cxb3#
- 1...Sxa4
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Qa2
- 2.Rb4#
- 1...Qa1
- 2.Rb4#
- 1...Qb2
- 2.Sxb2#
- 1...Bg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 1...Be5
- 2.Sb6#
- 1...Bf6
- 2.Sb6#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 1...Bh8
- 2.Sb6#
- 1...Sd1
- 2.Qf7#
- 1...Sa2
- 2.Qf7#
- 1...Se2
- 2.Qf7#
- 1...Sb5
- 2.Qf7#
- 1...Sd5!
- 1...Bb6+
- 1.Qe4?
- threat
- 2.Sb6#
- 2.Rbxc3#
- 2.Rdxc3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Qxc2
- 2.Sb6#
- 2.Rb4#
- 2.Rxd4#
- 2.Qxd4#
- 1...Qxb3
- 2.Rxd4#
- 2.Qxd4#
- 2.cxb3#
- 1...Sxa4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sd5
- 2.Rxd4#
- 2.Qxd4#
- 1...Qa2
- 2.Rbxc3#
- 2.Rb4#
- 2.Rdxc3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Qa1
- 2.Rb4#
- 2.Rxd4#
- 2.Qxd4#
- 1...Qb2
- 2.Sxb2#
- 2.Sb6#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sd1
- 2.Sb6#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sa2
- 2.Sb6#
- 2.Rxd4#
- 2.Qxd4#
- 1...Se2
- 2.Sb6#
- 1...Sb5
- 2.Sb6#
- 1...Sxe4!
- threat
- 1.Qc6+?
- 1...Bc5
- 2.Sb6#
- 2.Rbxc3#
- 2.Qxc5#
- 1...dxc6!
- 1...Bc5
- 1.Qg1?
- threat
- 2.Rxd4#
- 2.Qxd4#
- 1...Bb6+
- 2.Sxb6#
- 1...Bxg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 2.Qxc5#
- 1...Be5
- 2.Sb6#
- 2.Qc5#
- 1...Bf6
- 2.Sb6#
- 2.Qc5#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 2.Qc5#
- 1...Bh8
- 2.Sb6#
- 2.Qc5#
- 1...Se2
- 2.Qg8#
- 1...Sb5
- 2.Qg8#
- 1...Kd5!
- threat
- 1.Qh5?
- 1...Bb6+
- 2.Sxb6#
- 1...Qxc2
- 2.Rb4#
- 1...Qxc1
- 2.Rb4#
- 1...Qxb3
- 2.cxb3#
- 1...Sxa4
- 2.Qf7#
- 1...Qa2
- 2.Rb4#
- 1...Qa1
- 2.Rb4#
- 1...Qb2
- 2.Sxb2#
- 1...Bg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 2.Qxc5#
- 1...Be5
- 2.Sb6#
- 1...Bf6
- 2.Sb6#
- 2.Qc5#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 2.Qc5#
- 1...Bh8
- 2.Sb6#
- 2.Qc5#
- 1...Sd1
- 2.Qf7#
- 1...Sa2
- 2.Qf7#
- 1...Se2
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Sb5
- 2.Qf7#
- 1...Sd5!
- 1...Bb6+
- 1.Qh8?
- threat
- 2.Rxd4#
- 2.Qxd4#
- 1...Bb6+
- 2.Sxb6#
- 1...Bxh8
- 2.Sb6#
- 1...Bg1
- 2.Rbxc3#
- 2.Qxc3#
- 1...Bf2
- 2.Rbxc3#
- 2.Qxc3#
- 1...Be3
- 2.Rbxc3#
- 2.Qxc3#
- 1...Bc5
- 2.Rbxc3#
- 2.Qxc3#
- 1...Be5
- 2.Sb6#
- 2.Qc8#
- 1...Bf6
- 2.Sb6#
- 2.Qc8#
- 1...Ba7
- 2.Rbxc3#
- 2.Qxc3#
- 1...Bg7
- 2.Sb6#
- 2.Qc8#
- 1...Se2
- 2.Qg8#
- 1...Sb5
- 2.Qg8#
- 1...Kd5!
- threat
- 1.Qg2?
- Keys
- 1.Qa8!
- 1...Bb6+
- 2.Sxb6#
- 1...Qxc2
- 2.Rb4#
- 1...Qxc1
- 2.Rb4#
- 1...Qxb3
- 2.cxb3#
- 1...Sxa4
- 2.Qg8#
- 1...Sd5
- 2.Qxa6#
- 1...Qa2
- 2.Rb4#
- 1...Qa1
- 2.Rb4#
- 1...Qb2
- 2.Sxb2#
- 1...Bg1
- 2.Rbxc3#
- 1...Bf2
- 2.Rbxc3#
- 1...Be3
- 2.Rbxc3#
- 1...Bc5
- 2.Rbxc3#
- 1...Be5
- 2.Sb6#
- 2.Qc8#
- 1...Bf6
- 2.Sb6#
- 2.Qc8#
- 1...Ba7
- 2.Rbxc3#
- 1...Bg7
- 2.Sb6#
- 2.Qc8#
- 1...Bh8
- 2.Sb6#
- 2.Qc8#
- 1...Sd1
- 2.Qg8#
- 1...Sa2
- 2.Qg8#
- 1...Se2
- 2.Qg8#
- 1...Se4
- 2.Qg8#
- 1...Sb5
- 2.Qg8#
- 1...Bb6+
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 4
- Sets
- Q(a);N_GUARD,P_PINS(F)::R1(D)
- Q(a);N_GUARD,XP(C)::R1(D)
- Q(a);N_GUARD,XS(A)::R1(D)
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);OGATE,XR(D)::P(C),XQ(a)
- B(d);N_GUARD::R1(D),XS(b)
- B(d);N_GUARD::S(F)
- B(d);CHECK,N_GUARD::S(F),XB(d)
- Tries
- Try
- Q(B);
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- Q(a);N_GUARD,XP(C)::R1(D)
- Q(a);N_GUARD,XS(A)::R1(D)
- Q(a);OGATE,XR(D)::P(C),XQ(a)
- S(b);N_GUARD,XS(F)::QAB(B)
- S(b);N_GUARD::QAB(B)
- Q(a);N_GUARD,P_PINS(F)::R1(D)
- Q(a);N_GUARD::S(F),XQ(a)
- B(d);N_GUARD::R1(D),XS(b)
- B(d);N_GUARD::S(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- Q(a);N_GUARD,XP(C)::R1(D)
- Q(a);N_GUARD,XS(A)::R1(D)
- Q(a);OGATE,XR(D)::P(C),XQ(a)
- S(b);N_GUARD,XS(F)::QAB(B)
- S(b);N_GUARD::QAB(B)
- Q(a);N_GUARD,P_PINS(F)::R1(D)
- Q(a);N_GUARD::S(F),XQ(a)
- B(d);N_GUARD::R1(D),XS(b)
- B(d);N_GUARD::S(F)
- Refutation
- S(b);
- Try
- Q(B);P_PINB(d)
- Threat
- DUALS(5)
- Vars
- S(b);::S(F)
- Refutation
- S(b);N_SPINB(d),XQ(B)
- Try
- Q(B);CHECK
- Refutation
- P(f);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- B(d);N_GUARD,XQ(B)::R1(D),XS(b)
- B(d);N_GUARD::R1(D),XS(b)
- S(b);N_GUARD::QAB(B)
- Refutation
- K(c);P_SPINB(d),S_FLIGHT
- Try
- Q(B);
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- Q(a);N_GUARD,XP(C)::R1(D)
- Q(a);N_GUARD,XS(A)::R1(D)
- Q(a);OGATE,XR(D)::P(C),XQ(a)
- S(b);N_GUARD,XS(F)::QAB(B)
- Q(a);N_GUARD,P_PINS(F)::R1(D)
- Q(a);N_GUARD::S(F),XQ(a)
- B(d);N_GUARD::R1(D),XS(b)
- B(d);N_GUARD::S(F)
- S(b);N_GUARD::QAB(B)
- Refutation
- S(b);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- B(d);N_GUARD,XQ(B)::S(F)
- S(b);N_GUARD::QAB(B)
- Refutation
- K(c);P_SPINB(d),S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- B(d);CHECK,N_GUARD::S(F),XB(d)
- Q(a);N_GUARD,XP(C)::R1(D)
- Q(a);N_GUARD,XS(A)::R1(D)
- Q(a);OGATE,XR(D)::P(C),XQ(a)
- S(b);N_GUARD,XS(F)::QAB(B)
- S(b);N_GUARD,SBLOCK::QAB(B),XP(e)
- Q(a);N_GUARD,P_PINS(F)::R1(D)
- Q(a);N_GUARD::S(F),XQ(a)
- B(d);N_GUARD::R1(D),XS(b)
- S(b);N_GUARD::QAB(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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