MESON Chess Problem Database

Problem Display
PID: 240714 (6R1/8/8/2K5/8/4p3/4Q1pk/7b w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1995

6R1/8/8/2K5/8/4p3/4Q1pk/7b

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qh5#
  • Tries
    • 1.Kb4?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kc4?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kd4?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kb5?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kd5?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kb6?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kc6?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Kd6?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Rxg2+?
      • 1...Kh3
        • 2.Qg4#
      • 1...Bxg2!
    • 1.Rg5?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Rg6?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Rg7?
      • 1...Kh3
        • 2.Qh5#
      • 1...Kg1!
    • 1.Rh8+?
      • 1...Kg1
        • 2.Qe1#
      • 1...Kg3!
    • 1.Qf2?
      • threat
        • 2.Rh8#
      • 1...Kh3
        • 2.Qg3#
      • 1...exf2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Rh8#
      • 1...Kh3
        • 2.Qg3#
      • 1...g1Q
        • 2.Qh4#
      • 1...g1S
        • 2.Qg3#
      • 1...g1B
        • 2.Qg3#
        • 2.Qh4#
      • 1...g1R
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);P_SPINB(a),XR(C)
    • Try
      • R(C);
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • R(C)
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT::QAR1(A)
      • Refutation
        • P(d);N_SPINP(b),XQ(A)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • R(C)
    • Vars
      • K(c);P-FLIGHT::QAR1(A)
      • P(b);::QAR2(A)
      • P(b);::QAB1(A)
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