MESON Chess Problem Database

Problem Display
PID: 19442 (2R4K/2b5/1P3N2/3b4/3k4/B7/8/1B2Q3 w - - 0 1)

Knuppert, Hugo

Tidskrift for Schack, 1946

2R4K/2b5/1P3N2/3b4/3k4/B7/8/1B2Q3

#2

7 + 3

5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb4#
    • 1...Bh2
      • 2.Bb2#
      • 2.Qc3#
    • 1...Bg3
      • 2.Bb2#
      • 2.Qc3#
    • 1...Bf4
      • 2.Bb2#
      • 2.Qc3#
    • 1...Be5
      • 2.Bb2#
      • 2.Qd2#
      • 2.Qf2#
      • 2.Qc3#
      • 2.Qg1#
    • 1...Bxb6
      • 2.Bb2#
      • 2.Qc3#
    • 1...Bd6
      • 2.Bb2#
      • 2.Qc3#
    • 1...Bb8
      • 2.Bb2#
      • 2.Qc3#
    • 1...Bd8
      • 2.Bb2#
      • 2.Qc3#
  • Tries
    • 1.Bc5+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxc5!
    • 1.Rxc7?
      • threat
        • 2.Bb2#
        • 2.Qc3#
      • 1...Bc4
        • 2.Bb2#
        • 2.Bc5#
      • 1...Bc6!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Qb4#
        • 2.Qd3#
      • 1...Ke5!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe3!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qb4#
      • 1...Bxe4!
  • Keys
    • 1.Qe7!
      • 1...Kc3
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#
      • 1...Bxb6
        • 2.Bb2#
      • 1...Be4
        • 2.Qc5#
      • 1...Be6
        • 2.Qc5#
      • 1...Bh1
        • 2.Qc5#
      • 1...Ba2
        • 2.Qc5#
      • 1...Bg2
        • 2.Qc5#
      • 1...Bb3
        • 2.Qc5#
      • 1...Bf3
        • 2.Qc5#
      • 1...Bc4
        • 2.Bb2#
      • 1...Bc6
        • 2.Qc5#
      • 1...Bb7
        • 2.Qc5#
      • 1...Bf7
        • 2.Qc5#
      • 1...Ba8
        • 2.Qc5#
      • 1...Bg8
        • 2.Qc5#
      • 1...Bh2
        • 2.Bb2#
      • 1...Bg3
        • 2.Bb2#
      • 1...Bf4
        • 2.Bb2#
      • 1...Be5
        • 2.Qc5#
      • 1...Bd6
        • 2.Bb2#
      • 1...Bb8
        • 2.Bb2#
      • 1...Bd8
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 22
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINB(c)::QAR1(B)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P_SPINB(c),S_FLIGHT,XB(C)
    • Try
      • R(F);XB(c)
      • Threat
        • DUALS(2)
      • Refutation
        • B(b);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(b);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P_SPINB(c),S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT,P_SPINB(c)::QAR1(B)
      • B(c);XP(D)::B(C)
      • B(b);::QAB1(B)
      • B(b);SBLOCK::B(C)
      • B(c);::B(C)
      • B(c);P_PINS(E),SBLOCK::QAB1(B)
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