MESON Chess Problem Database

Problem Display
PID: 146440 (K3k3/pp1R4/4P2B/8/3N2B1/1Q2n3/2b5/3r1r2 w - - 0 1)

Mitrinovic, Stevan

Chess, 1955

K3k3/pp1R4/4P2B/8/3N2B1/1Q2n3/2b5/3r1r2

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.exf7#
    • 1...Sf5
      • 2.Bh5#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sc7#
      • 1...Sd5
        • 2.Sd6#
      • 1...Rxd7!
    • 1.Bh5+?
      • 1...Rf7
        • 2.Bxf7#
      • 1...Bg6!
    • 1.Qa3?
      • threat
        • 2.Qe7#
      • 1...Rf7
        • 2.exf7#
      • 1...Sf5
        • 2.Bh5#
        • 2.Qf8#
      • 1...Sd5!
    • 1.Qb4?
      • threat
        • 2.Qe7#
      • 1...Rf7
        • 2.exf7#
      • 1...Sf5
        • 2.Bh5#
        • 2.Qf8#
      • 1...Sd5!
    • 1.Qxb7?
      • threat
        • 2.Qc8#
        • 2.Qb8#
      • 1...Rb1
        • 2.Qc8#
      • 1...Be4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Re7#
      • 1...Rxd7
        • 2.exd7#
      • 1...bxc6
        • 2.Qb8#
      • 1...Rf7
        • 2.exf7#
      • 1...Sd5
        • 2.Rd8#
      • 1...Sf5
        • 2.Bh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::P(D),XR(b)
    • S(d);S_CUTB(c),S_CUTR(b)::B(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(d);S_CUTR(a)::S(B)
      • Refutation
        • R(a);XR(F)
    • Try
      • B(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::B(C),XR(b)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(b);OGATE::P(D),XR(b)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(b);OGATE::P(D),XR(b)
      • Refutation
        • S(d);
    • Try
      • Q(A);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR2(A)
      • Refutation
        • B(c);P_PINQ(A)
  • Actual
    • S(B);
    • Threat
      • R1(F)
    • Vars
      • R(a);OGATE,XR(F)::P(D),XR(a)
      • P(f);OGATE,XS(B)::QAR(A)
      • R(b);OGATE::P(D),XR(b)
      • S(d);S_CUTR(a)::R1(F)
      • S(d);S_CUTB(c),S_CUTR(b)::B(C)
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