MESON Chess Problem Database

Problem Display
PID: 46750 (8/2K5/2N5/4R3/4pk2/8/8/3QB3 w - - 0 1)

Bruder, Wolfgang Alexander

Rhein-Main Presse, 1995

8/2K5/2N5/4R3/4pk2/8/8/3QB3

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
3713 Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • 1...Ke3
        • 2.Sd5#
      • 1...e3
        • 2.Sd3#
      • 1...Kxe5!
    • 1.Rf5+?
      • 1...Ke3
        • 2.Bf2#
        • 2.Qd2#
      • 1...Kxf5!
    • 1.Qc2?
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...e3
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kg4!
    • 1.Qb3?
      • threat
        • 2.Qg3#
      • 1...Kg4
        • 2.Qg3#
      • 1...e3!
    • 1.Qa4?
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...Kg4!
    • 1.Qg4+?
      • 1...Ke3
        • 2.Qxe4#
      • 1...Kxg4!
    • 1.Qh5?
      • 1...e3
        • 2.Qf5#
      • 1...Ke3!
    • 1.Qb1?
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...e3
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kg4!
    • 1.Qd3?
      • threat
        • 2.Qxe4#
        • 2.Qg3#
      • 1...Kg4
        • 2.Qg3#
      • 1...e3
        • 2.Qe4#
        • 2.Qf5#
      • 1...exd3!
    • 1.Qd4?
      • threat
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...Kg4!
    • 1.Qd5?
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...e3
        • 2.Qe4#
      • 1...Kg4!
  • Keys
    • 1.Se7!
      • 1...Ke3
        • 2.Sd5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...e3
        • 2.Sg6#

This anticipates 259226(2022)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::S(D)
        • P(a);N_GUARD::S(D)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
        • K(b);P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(A),XP(a)
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(a);::QAR1(A)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
        • K(b);P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(A),XP(a)
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(A),XP(a)
        • P(a);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(D)
      • K(b);OGATEB,S_FLIGHT,XR(C)::QAB1(A)
      • P(a);::S(D)
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