MESON Chess Problem Database

Problem Display
PID: 143398 (6Bb/R6n/2kpR3/K4p2/pP3N2/2r2p2/2Q5/r4b2 w - - 0 1)

Ellerman, Arnoldo

Good Companions (July), 1917

6Bb/R6n/2kpR3/K4p2/pP3N2/2r2p2/2Q5/r4b2

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5+
      • 2.Qxc5#
  • Tries
    • 1.Ree7?
      • threat
        • 2.Bd5#
        • 2.Rac7#
        • 2.Rec7#
      • 1...d5
        • 2.Re6#
      • 1...Rd1
        • 2.Rac7#
        • 2.Rec7#
      • 1...Bc4
        • 2.Rac7#
        • 2.Rec7#
      • 1...Sf6
        • 2.Rac7#
        • 2.Rec7#
      • 1...Rc5+!
    • 1.Re8?
      • threat
        • 2.Bd5#
        • 2.Rc8#
      • 1...d5
        • 2.Re6#
      • 1...Rd1
        • 2.Rc8#
      • 1...Bc4
        • 2.Rc8#
      • 1...Ba6
        • 2.Bd5#
      • 1...Sf6
        • 2.Rc8#
      • 1...Rc5+!
    • 1.Qxc3+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bxc3!
  • Keys
    • 1.Re2!
      • threat
        • 2.Bd5#
      • 1...Rc5+
        • 2.b5#
      • 1...d5
        • 2.Re6#
      • 1...Rd1
        • 2.Qxa4#
      • 1...Sf6
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE::QAR1(A),XR(c)
  • Tries
    • Try
      • R(E);N_PINP(h)
      • Threat
        • DUALS(3)
      • Vars
        • P(h);OGATEB::R(E)
      • Refutation
        • R(c);CHECK
    • Try
      • R(E);N_PINP(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);OGATEB::R(E)
        • R(a);::R(E)
        • B(b);N_SPINR(c)::R(E)
        • B(b);::B(G)
        • S(i);::R(E)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(A);CHECK,XR(c)
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(A),XB(b)
      • Refutation
        • B(j);P_PINP(B),XQ(A)
  • Actual
    • R(E);N_PINP(h)
    • Threat
      • B(G)
    • Vars
      • R(c);CHECK::P(B)
      • P(h);OGATEB::R(E)
      • R(a);N_GUARD::QAB(A),XP(e)
      • S(i);S_CUTB(j)::QAR(A),XR(c)
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