MESON Chess Problem Database

Problem Display
PID: 99162 (4Q3/2pR4/p1Bn2pq/Nb1N4/1K1k4/3rp3/2Pn2p1/3R2B1 w - - 0 1)

Hanzli, Miklos

Magyar Sakkszovetseg, 1975

4Q3/2pR4/p1Bn2pq/Nb1N4/1K1k4/3rp3/2Pn2p1/3R2B1

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3+
      • 2.Sxb3#
    • 1...Sb1
      • 2.Sb3#
    • 1...Sf1
      • 2.Sb3#
      • 2.c3#
    • 1...Sb3
      • 2.Sxb3#
      • 2.c3#
    • 1...Sf3
      • 2.Sb3#
      • 2.c3#
    • 1...S2c4
      • 2.Sb3#
      • 2.Rxd3#
      • 2.c3#
    • 1...S2e4
      • 2.Sb3#
  • Tries
    • 1.Sb3+?
      • 1...Sxb3
        • 2.c3#
      • 1...Rxb3+!
    • 1.Sc3?
      • threat
        • 2.Se2#
      • 1...Rxc3
        • 2.Qe4#
      • 1...Bxc6
        • 2.Sxc6#
      • 1...Qh5!
    • 1.Rxd2?
      • threat
        • 2.Sb3#
        • 2.c3#
      • 1...Rxd2
        • 2.Sb3#
      • 1...Bxc6
        • 2.Rxd3#
      • 1...Ba4
        • 2.Rxd3#
        • 2.c3#
      • 1...Bc4
        • 2.c3#
      • 1...Se4
        • 2.Sb3#
      • 1...Sxe8!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sf5#
      • 1...Rb3+
        • 2.Sxb3#
      • 1...Qxe3
        • 2.Qh8#
      • 1...Rxe3
        • 2.Sb3#
        • 2.Qe4#
      • 1...Bxc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);CHECK,N_GUARD,P_SPINS(a)::S(E),XR(c)
    • S(a);N_GUARD,P_SPINR(c)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • S(a);P_SPINR(c),XS(E)::P(C)
      • Refutation
        • R(c);CHECK,P_SPINS(a),XS(E)
    • Try
      • S(F);P_PINS(h)
      • Threat
        • S(F)
      • Vars
        • R(c);N_SPINS(h),P_SPINS(a),XS(F)::QAR1(I)
        • B(f);XB(G)::S(E),XB(f)
      • Refutation
        • Q(j);
    • Try
      • R(A);P_PINR(c),XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);N_SPINR(c),XR(A)::S(E)
        • B(f);N_GUARD,XB(G)::R1(A),XR(c)
        • B(f);::P(C)
        • S(h);::S(E)
      • Refutation
        • S(h);XQ(I)
  • Actual
    • S(F);P_PINS(h),XP(d)
    • Threat
      • B(B)+S(F),DCHECK
    • Vars
      • R(c);CHECK,N_GUARD,N_SPINS(h),P_SPINS(a)::S(E),XR(c)
      • Q(j);N_GUARD,P_SPINQ(j),XS(F)::QAB(I)
      • B(f);XB(G)::S(E),XB(f)
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