MESON Chess Problem Database

Problem Display
PID: 2354 (3N4/1p4p1/1P3kN1/2n1p3/p6K/1R6/Q1B5/2r3n1 w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

3N4/1p4p1/1P3kN1/2n1p3/p6K/1R6/Q1B5/2r3n1

#2

7 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3+
      • 2.Rxf3#
  • Tries
    • 1.Ra3?
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb3!
    • 1.Rc3?
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb3!
    • 1.Re3?
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb3!
    • 1.Rg3?
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb3!
    • 1.Rh3?
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qf7#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Kf5
        • 2.Rf3#
      • 1...Kxg6
        • 2.Rd6#
      • 1...Sb3
        • 2.Rd6#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);CHECK,N_GUARD::R(C),XS(b)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);CHECK,N_GUARD::R(C),XS(b)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);CHECK,N_GUARD::R(C),XS(b)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);CHECK,N_GUARD::R(C),XS(b)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);CHECK,N_GUARD::R(C),XS(b)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);CHECK,N_GUARD::R(C),XS(b)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • S(d);
  • Actual
    • R(C);
    • Threat
      • QAR1(A)
    • Vars
      • S(b);CHECK,N_GUARD::R(C),XS(b)
      • K(f);P-FLIGHT::B(B)+R(C),DCHECK
      • K(f);P-FLIGHT,XS(F)::B(B)+R(C),DCHECK
      • S(d);N_GUARD::R(C)
      • S(d);N_GUARD::QAR1(A),XS(d)
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