MESON Chess Problem Database

Problem Display
PID: 11980 (1n1R4/b4p2/4B2p/2r1pN1K/4k3/r2pp3/Q1P3PB/4N3 w - - 0 1)

Gooderson, Arthur R

The Problemist, 1973

1n1R4/b4p2/4B2p/2r1pN1K/4k3/r2pp3/Q1P3PB/4N3

#2

9 + 10

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.cxd3#
    • 1...Ra4
      • 2.cxd3#
    • 1...Raa5
      • 2.cxd3#
    • 1...Ra6
      • 2.cxd3#
    • 1...Rxc2
      • 2.Qd5#
    • 1...Rc3
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rc6
      • 2.Qd5#
    • 1...Rc7
      • 2.Qd5#
    • 1...Rc8
      • 2.Qd5#
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Sg3#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...e2
        • 2.Sf2#
      • 1...Sd7!
    • 1.Sf3?
      • threat
        • 2.Sd6#
      • 1...Ra6
        • 2.cxd3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rc6
        • 2.Qd5#
      • 1...e2
        • 2.Sd2#
      • 1...dxc2!
    • 1.Rd5?
      • threat
        • 2.Sd6#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Ra6
        • 2.cxd3#
      • 1...Rc6
        • 2.Rxe5#
      • 1...e2!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Sd6#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Ra6
        • 2.Rxe3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rc6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD,XQ(B)::P(C),XP(b)
    • R(a);N_GUARD::P(C),XP(b)
    • R(e);N_GUARD,XP(C)::QAB1(B)
    • R(e);N_GUARD::QAB1(B)
    • R(e);N_GUARD::QAB1(B),XR(e)
  • Tries
    • Try
      • S(A);XP(b)
      • Threat
        • S(F)
      • Vars
        • R(a);OGATE,XS(A)::P(C),XR(a)
        • R(e);N_GUARD::QAB1(B),XR(e)
        • P(c);N_GUARD::S(A)
      • Refutation
        • S(j);
    • Try
      • S(A);
      • Threat
        • S(F)
      • Vars
        • R(a);N_GUARD::P(C),XP(b)
        • R(e);N_GUARD::QAB1(B),XR(e)
        • R(e);N_GUARD::QAB1(B)
        • P(c);N_GUARD::S(A)
      • Refutation
        • P(b);XP(C)
    • Try
      • R(I);
      • Threat
        • S(F)
      • Vars
        • R(e);OGATE,XR(I)::QAB1(B),XR(e)
        • R(a);N_GUARD::P(C),XP(b)
        • R(e);N_GUARD::R1(I),XP(f)
      • Refutation
        • P(c);
  • Actual
    • R(I);XP(b)
    • Threat
      • S(F)
    • Vars
      • R(a);OGATE,XR(I)::P(C),XR(a)
      • R(a);N_GUARD::R1(I),XP(c)
      • R(e);N_GUARD::QAB1(B),XR(e)
      • R(e);N_GUARD::QAB1(B)
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