MESON Chess Problem Database

Problem Display
PID: 214268 (N1R5/B2r4/2nrp3/pn1kN2Q/PP4P1/p1p5/2B2Rb1/K5b1 w - - 0 1)

Schor, Laszlo

Suomen Shakki, 1955

N1R5/B2r4/2nrp3/pn1kN2Q/PP4P1/p1p5/2B2Rb1/K5b1

#2

11 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Bb3#
    • 1...Sbd4
      • 2.Sb6#
    • 1...Scd4
      • 2.Rc5#
  • Tries
    • 1.Sd3+?
      • 1...Kc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Ke4
        • 2.Rf4#
      • 1...Se5
        • 2.Sf4#
        • 2.Qxe5#
      • 1...e5!
    • 1.Sf3+?
      • 1...Kc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Se5
        • 2.Rc5#
        • 2.Qxe5#
      • 1...e5!
    • 1.Sc4+?
      • 1...Kxc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Se5
        • 2.Se3#
        • 2.Qxe5#
      • 1...e5!
    • 1.Sxc6+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Qxb5#
        • 2.Qc5#
      • 1...e5!
    • 1.Sg6+?
      • 1...Kc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Se5
        • 2.Sf4#
        • 2.Qxe5#
      • 1...e5!
    • 1.Sxd7+?
      • 1...Kc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Se5
        • 2.Sf6#
        • 2.Qxe5#
      • 1...e5!
    • 1.Sf7+?
      • 1...Kc4
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Se5
        • 2.Qxe5#
      • 1...e5!
    • 1.Be3?
      • threat
        • 2.Sb6#
      • 1...Sxb4
        • 2.Rc5#
      • 1...Sxe5
        • 2.Rc5#
      • 1...Scd4
        • 2.Rc5#
      • 1...Sca7
        • 2.Rc5#
      • 1...Se7
        • 2.Rc5#
      • 1...Sb8
        • 2.Rc5#
      • 1...Sd8
        • 2.Rc5#
      • 1...Rb7!
    • 1.Rd2+?
      • 1...Bd4
        • 2.Sb6#
      • 1...Sbd4
        • 2.Sb6#
      • 1...Scd4
        • 2.Rc5#
      • 1...cxd2!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Bb3#
      • 1...Bf1
        • 2.Be4#
      • 1...Sbd4
        • 2.Sb6#
      • 1...Scd4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::B(B)
    • S(f);SBLOCK::S(J)
    • S(h);OGATE,SBLOCK::R1(K)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(g);S_FLIGHT::R1(C)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK,XS(h)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK,XR(k)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(G);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAR1(H),XS(h)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • B(I);
      • Threat
        • S(J)
      • Vars
        • S(h);OGATE,XP(E)::R1(K)
        • S(h);OGATE,P_SPINS(h),XS(G)::R1(K)
        • S(h);OGATE::R1(K)
      • Refutation
        • R(k);
    • Try
      • R(C);CHECK
      • Vars
        • B(a);P_SPINB(a)::S(J)
        • S(f);P_SPINS(f)::S(J)
        • S(h);OGATE,P_SPINS(h)::R1(K)
      • Refutation
        • P(d);XR(C)
  • Actual
    • R(C);
    • Threat
      • B(B)
    • Vars
      • B(b);N_GUARD::B(B)
      • S(f);S_CUTB(a)::S(J)
      • S(h);OGATE::R1(K)
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