MESON Chess Problem Database
Problem Display
PID: 198902 (8/Kn6/8/3R4/pk2N3/1p2Q3/2P5/8 w - - 0 1)
Kovacs, Florian Janos
Bekes, 1921
#2
5 + 4
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Qd4#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...bxc2
- 2.Qc3#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Kc4
- Tries
- 1.Ka6?
- 1...Sc5+
- 2.Qxc5#
- 1...Kc4
- 2.Rd4#
- 2.Qd4#
- 1...bxc2
- 2.Rd4#
- 2.Qc3#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Rd4#
- 2.Qc3#
- 1...a3
- 2.Rd4#
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Sc5+
- 1.Kb6?
- 1...Kc4
- 2.Rd4#
- 2.Qd4#
- 1...bxc2
- 2.Rd4#
- 2.Qc3#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Rd4#
- 2.Qc3#
- 1...a3
- 2.Rd4#
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Kxb7?
- threat
- 2.Qc5#
- 1...Kc4
- 2.Qd4#
- 2.Qc5#
- 1...bxc2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- threat
- 1.Ka8?
- 1...Kc4
- 2.Qd4#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Kb8?
- 1...Kc4
- 2.Qd4#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Sd6?
- 1...Sxd6
- 2.Qc5#
- 1...bxc2
- 2.Rb5#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Rb5#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Sxd6
- 1.Re5?
- 1...Kc4
- 2.Qc3#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Rf5?
- 1...Kc4
- 2.Qc3#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Rg5?
- 1...Kc4
- 2.Qc3#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Rh5?
- 1...Kc4
- 2.Qc3#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qd4#
- 2.Qxb3#
- 1...Ka3!
- 1...Kc4
- 1.Qd2+?
- 1...Kc4
- 2.Qd4#
- 1...Ka3!
- 1...Kc4
- 1.Qb6+?
- 1...Kc4
- 2.Rd4#
- 2.Qd4#
- 2.Qb5#
- 1...Ka3!
- 1...Kc4
- 1.c3+?
- 1...Kc4
- 2.Qd4#
- 2.Qd3#
- 1...Ka3!
- 1...Kc4
- 1.Ka6?
- Keys
- 1.Ra5!
- 1...Ka3
- 2.Qxb3#
- 1...Kc4
- 2.Qc3#
- 1...Kxa5
- 2.Qb6#
- 1...Sxa5
- 2.Qc5#
- 1...bxc2
- 2.Qc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Qc3#
- 1...Ka3
- 1.Ra5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(c);P-FLIGHT::QAR1(B)
- S(d);N_GUARD::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- P(a);XP(A)::QAB1(B)
- P(a);::QAB1(B)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- K(E);S_FLIGHT
- Vars
- S(d);N_GUARD::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- K(E);P-FLIGHT,XS(d)
- Threat
- QAB1(B)
- Vars
- P(a);XP(A)::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- K(E);P-FLIGHT
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- K(E);S_FLIGHT
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- S(C);
- Vars
- S(d);N_GUARD,XS(C)::QAB1(B)
- P(a);XP(A)::R1(D)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::R1(D)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- R(D);
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- R(D);
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- R(D);
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- R(D);
- Vars
- K(c);P-FLIGHT::QAR1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- Refutation
- K(c);P_SPINP(a),S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(B)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- P(A);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- R(D);
- Vars
- K(c);P_SPINP(a),S_FLIGHT::QAR1(B),XP(a)
- K(c);P-FLIGHT::QAR1(B)
- K(c);S_FLIGHT,XR(D)::QAB1(B)
- S(d);N_GUARD,XR(D)::QAB1(B)
- P(a);XP(A)::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- S(d);N_GUARD::QAB1(B)
- P(a);::QAB1(B)
- P(b);::QAB1(B)
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