MESON Chess Problem Database

Problem Display
PID: 10731 (8/2K5/k7/8/4Q3/3R4/2n3B1/r7 w - - 0 1)

Tuxen, Harri Viggo

Skakbladet, 1967

8/2K5/k7/8/4Q3/3R4/2n3B1/r7

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qb7#
      • 2.Qa8#
    • 1...Rb1
      • 2.Qa4#
    • 1...Rc1
      • 2.Qa4#
    • 1...Rd1
      • 2.Qa4#
    • 1...Re1
      • 2.Qa4#
    • 1...Rf1
      • 2.Qa4#
    • 1...Rg1
      • 2.Qa4#
    • 1...Rh1
      • 2.Qa4#
    • 1...Ra4
      • 2.Qxa4#
    • 1...Ra5
      • 2.Qb7#
    • 1...Sa3
      • 2.Qa4#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8#
      • 1...Ka7
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sb4!
    • 1.Qc6+?
      • 1...Ka7
        • 2.Qb7#
        • 2.Qa8#
        • 2.Qb6#
      • 1...Ka5!
    • 1.Qb4?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qb6#
        • 2.Qb7#
      • 1...Rb1
        • 2.Qa4#
      • 1...Sxb4!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Rd5#
      • 1...Ka7!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Ra3#
      • 1...Ka5
        • 2.Rd5#
      • 1...Kb5
        • 2.Rd5#
      • 1...Ka7
        • 2.Qb7#
      • 1...Rxf1
        • 2.Qa4#
      • 1...Ra3
        • 2.Rxa3#
      • 1...Ra4
        • 2.Qxa4#
      • 1...Ra5
        • 2.Qb7#
      • 1...Sa3
        • 2.Rxa3#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::QAR2(C)
    • R(a);N_GUARD::QAR2(C),XR(a)
    • R(a);SBLOCK::QAB1(C)
    • S(b);S_CUTR(a)::QAR2(C)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR2(C)
      • Vars
        • K(c);P-FLIGHT::QAR(C)
      • Refutation
        • S(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • R(a);N_GUARD::QAR2(C)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::R(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • K(c);P-FLIGHT::R(B)
      • K(c);S_FLIGHT::B(A)+R(B),DCHECK
      • K(c);P-FLIGHT::QAR1(C)
      • R(a);N_GUARD,XB(A)::QAR2(C)
      • R(a);::B(A)+R(B),DCHECK,XR(a)
      • R(a);N_GUARD::QAR2(C),XR(a)
      • R(a);SBLOCK::QAB1(C)
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