MESON Chess Problem Database

Problem Display
PID: 12095 (2K1R3/5p2/2pk4/2p5/3rP3/3QR3/8/8 w - - 0 1)

Gooderson, Arthur R

The Problemist, 1974

2K1R3/5p2/2pk4/2p5/3rP3/3QR3/8/8

#2

5 + 5

3207 A R Gooderson An English Progressive 1996
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Rxd3#
    • 1...Rd5
      • 2.e5#
    • 1...c4
      • 2.Qxd4#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Rf6#
      • 1...c4
        • 2.Qxd4#
      • 1...f6
        • 2.Rxf6#
      • 1...f5!
    • 1.Rg3?
      • 1...Rxd3
        • 2.Rxd3#
      • 1...c4
        • 2.Qxd4#
      • 1...f5
        • 2.Rg6#
      • 1...Rd5
        • 2.e5#
      • 1...f6!
  • Keys
    • 1.Rh3!
      • threat
        • 2.Qg3#
      • 1...Rxd3
        • 2.Rxd3#
      • 1...c4
        • 2.Qxd4#
      • 1...f5
        • 2.Rh6#
      • 1...Rd5
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);N_SPINR(a),OGATE,XQ(A)::R(B),XR(a)
    • R(a);::P(C)
    • P(b);N_GUARD::QAR2(A),XR(a)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(b);N_GUARD::QAR2(A),XR(a)
        • P(e);::R(B),XP(e)
      • Refutation
        • P(e);
    • Try
      • R(B);
      • Vars
        • R(a);N_SPINR(a),OGATE,XQ(A)::R(B),XR(a)
        • P(b);N_GUARD::QAR2(A),XR(a)
        • P(e);N_GUARD::R(B)
        • R(a);::P(C)
      • Refutation
        • P(e);
  • Actual
    • R(B);
    • Threat
      • QAB(A)
    • Vars
      • R(a);N_SPINR(a),OGATE,XQ(A)::R(B),XR(a)
      • P(b);N_GUARD::QAR2(A),XR(a)
      • P(e);N_GUARD::R(B)
      • R(a);::P(C)
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