MESON Chess Problem Database

Problem Display
PID: 10087 (3R4/3qN2b/Q3p3/3N4/2RPkP2/6P1/prr1P2K/BB6 w - - 0 1)

Lender, Baruch

1st HM., BCF 101. Ty., 1962-1963

3R4/3qN2b/Q3p3/3N4/2RPkP2/6P1/prr1P2K/BB6

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qxe6#
    • 1...Qb5
      • 2.Qxe6#
    • 1...Qe8
      • 2.Qxe6#
    • 1...Qa7
      • 2.Qxe6#
    • 1...Qb7
      • 2.Qxe6#
    • 1...Qxd8
      • 2.Qxe6#
    • 1...Rb4
      • 2.Bxc2#
    • 1...Rb5
      • 2.Bxc2#
    • 1...Rb6
      • 2.Bxc2#
    • 1...Rb7
      • 2.Bxc2#
    • 1...Rb8
      • 2.Bxc2#
    • 1...e5
      • 2.dxe5#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Qd3#
      • 1...Qb5
        • 2.Qxe6#
      • 1...Rb5
        • 2.Bxc2#
      • 1...Rb3!
    • 1.Rb4?
      • threat
        • 2.Qd3#
      • 1...Qb5
        • 2.Qxe6#
      • 1...Rb3!
    • 1.Qa3?
      • threat
        • 2.Sf6#
        • 2.Qd3#
        • 2.Qe3#
        • 2.Qf3#
      • 1...Qxd5
        • 2.Qd3#
        • 2.Qf3#
      • 1...Qxe7
        • 2.Qd3#
      • 1...exd5
        • 2.Qd3#
        • 2.Qf3#
      • 1...Rb3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qd3#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Qb5
        • 2.Sf6#
      • 1...Rb5
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(f);N_GUARD::QAR2(J),XP(e)
    • Q(f);N_GUARD,XR(L)::QAR2(J),XP(e)
    • R(b);N_GUARD::B(B),XR(c)
    • P(e);OGATE::R(F)+P(G),XP(e)
  • Tries
    • Try
      • R(F);
      • Threat
        • QAB1(J)
      • Vars
        • Q(f);N_GUARD::QAR2(J),XP(e)
        • R(b);N_GUARD::B(B),XR(c)
      • Refutation
        • R(b);
    • Try
      • R(F);
      • Threat
        • QAB1(J)
      • Vars
        • Q(f);N_GUARD::QAR2(J),XP(e)
      • Refutation
        • R(b);
    • Try
      • Q(J);
      • Threat
        • DUALS(4)
      • Vars
        • Q(f);XS(K)::QAB1(J)
      • Refutation
        • R(b);
  • Actual
    • R(F);
    • Threat
      • QAB1(J)
    • Vars
      • K(d);N_SPINR(c),OGATEB,P-FLIGHT,XP(G)::QAR1(J)
      • Q(f);::S(I)
      • R(b);::R1(F)
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