MESON Chess Problem Database

Problem Display
PID: 238691 (R7/b2N1p2/1pK5/8/3knQ1p/1Ppp4/8/1b1R3q w - - 0 1)

Ahues, Herbert Siegfried Oskar

idee & form, 2019

R7/b2N1p2/1pK5/8/3knQ1p/1Ppp4/8/1b1R3q

#2

6 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Ra4#
  • Tries
    • 1.Se5?
      • threat
        • 2.Rd8#
      • 1...c2
        • 2.Rxd3#
      • 1...Bb8
        • 2.Ra4#
      • 1...Qh3!
    • 1.Sf6?
      • threat
        • 2.Rd8#
      • 1...Qh3
        • 2.Qxe4#
      • 1...Bb8
        • 2.Ra4#
      • 1...c2!
    • 1.Re1?
      • threat
        • 2.Qe3#
        • 2.Qe5#
      • 1...c2
        • 2.Qe5#
      • 1...d2
        • 2.Qe3#
      • 1...Qh3
        • 2.Rxe4#
        • 2.Qe5#
        • 2.Qxe4#
      • 1...Qf3
        • 2.Qe5#
      • 1...Qg1
        • 2.Rxe4#
        • 2.Qe5#
        • 2.Qxe4#
      • 1...Qh2
        • 2.Rxe4#
        • 2.Qe3#
        • 2.Qxe4#
      • 1...Bb8
        • 2.Ra4#
        • 2.Qe3#
      • 1...f6
        • 2.Qe3#
      • 1...Qxe1!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rd8#
      • 1...c2
        • 2.Rxd3#
      • 1...Qh3
        • 2.Qxe4#
      • 1...Bb8
        • 2.Ra4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(i);OGATE::R(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(F)
      • Vars
        • P(c);S_CUTB(a)::R1(A),XP(d)
        • B(i);OGATE::R(F)
      • Refutation
        • Q(b);
    • Try
      • S(E);
      • Threat
        • R(F)
      • Vars
        • Q(b);N_GUARD::QAR1(C),XS(f)
        • B(i);OGATE::R(F)
      • Refutation
        • P(c);
    • Try
      • R(A);N_PINP(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(C)
        • P(d);::QAB1(C)
        • Q(b);::QAB1(C)
        • P(j);::QAB1(C)
      • Refutation
        • Q(b);XR(A)
  • Actual
    • S(E);
    • Threat
      • R(F)
    • Vars
      • P(c);S_CUTB(a)::R1(A),XP(d)
      • Q(b);N_GUARD::QAR1(C),XS(f)
      • B(i);OGATE::R(F)
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