MESON Chess Problem Database

Problem Display
PID: 287550 (4N2b/8/4Q3/6k1/6p1/8/6K1/7R w - - 0 1)

Zimmer, Eligiusz

Problem Paradise, 2022

4N2b/8/4Q3/6k1/6p1/8/6K1/7R

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxf6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qf5#
        • 2.Qh6#
      • 1...Bf6
        • 2.Qf5#
      • 1...Bg7
        • 2.Qf5#
      • 1...g3
        • 2.Qf5#
      • 1...Kf4!
    • 1.Rh5+?
      • 1...Kf4
        • 2.Rf5#
      • 1...Kxh5!
    • 1.Qf7?
      • threat
        • 2.Rh5#
      • 1...Bf6
        • 2.Qxf6#
      • 1...g3!
    • 1.Qe5+?
      • 1...Kg6
        • 2.Qh5#
      • 1...Bxe5!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Qxg4#
      • 1...Kf4
        • 2.Rxg4#
      • 1...Kxh4
        • 2.Qh6#
      • 1...g3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::QAB1(C),XB(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR1(C)
        • P(a);::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(A)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • R1(A)
      • Vars
        • B(c);N_GUARD::QAB1(C),XB(c)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(C)
      • Refutation
        • B(c);XQ(C)
  • Actual
    • R(A);
    • Threat
      • QAR1(C),XP(a)
    • Vars
      • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(A),XP(a)
      • K(b);N_GUARD,S_FLIGHT,XR(A)::QAR2(C)
      • P(a);::QAR1(C)
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