MESON Chess Problem Database

Problem Display
PID: 15383 (5K2/2Np1R1B/6r1/3N4/1Rr1kP1n/3b1pP1/1BnPpp2/Q7 w - - 0 1)

Lender, Baruch

1st HM., Israel Ring Ty., 1986

5K2/2Np1R1B/6r1/3N4/1Rr1kP1n/3b1pP1/1BnPpp2/Q7

#2

11 + 10

721 Variantim 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sc3#
    • 1...Sg2
      • 2.Bxg6#
  • Tries
    • 1.Bg7?
      • threat
        • 2.Sc3#
        • 2.Qe5#
      • 1...Sxa1
        • 2.Sc3#
      • 1...Sxb4
        • 2.Qe5#
      • 1...Rd4
        • 2.Sc3#
      • 1...d6
        • 2.Sc3#
      • 1...Sd4!
    • 1.Bh8?
      • threat
        • 2.Sc3#
        • 2.Qe5#
      • 1...Sxa1
        • 2.Sc3#
      • 1...Sxb4
        • 2.Qe5#
      • 1...Rd4
        • 2.Sc3#
      • 1...d6
        • 2.Sc3#
      • 1...Sd4!
    • 1.Bxg6+?
      • 1...Sf5
        • 2.Sf6#
        • 2.Bxf5#
        • 2.Re7#
      • 1...Sxg6+!
    • 1.Rxc4+?
      • 1...Sd4
        • 2.Sc3#
        • 2.Rxd4#
      • 1...Bxc4!
    • 1.Qa7?
      • threat
        • 2.Sc3#
      • 1...Sxb4
        • 2.Qe3#
      • 1...Sd4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qe8#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(f);::S(G)
    • S(h);N_GUARD::B(J),XR(i)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XQ(A)::S(G)
        • S(a);N_SPINR(f),P_SPINR(i),XR(E)::QAR1(A)
        • R(f);::S(G)
        • P(j);::S(G)
      • Refutation
        • S(a);N_SPINR(f),P_SPINR(i)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XQ(A)::S(G)
        • S(a);N_SPINR(f),P_SPINR(i),XR(E)::QAR1(A)
        • R(f);::S(G)
        • P(j);::S(G)
      • Refutation
        • S(a);N_SPINR(f),P_SPINR(i)
    • Try
      • B(J);CHECK,XR(i)
      • Refutation
        • S(h);CHECK,XB(J)
    • Try
      • R(E);CHECK,P_PINR(i),XR(f)
      • Refutation
        • B(d);XR(E)
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • S(a);N_GUARD,N_SPINR(f),P_SPINR(i),XR(E)::QAR1(A)
      • Refutation
        • S(a);N_SPINR(f),P_SPINR(i)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • S(a);N_SPINR(f),P_SPINR(i),SBLOCK::QAB(A)+S(G),DCHECK
      • S(h);SBLOCK::QAB(A)+S(G),DCHECK
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Developed and maintained by Brian Stephenson.
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