MESON Chess Problem Database

Problem Display
PID: 158868 (6n1/3R4/6N1/b2r4/4k1P1/p4r1R/K1P2B2/nQ6 w - - 0 1)

Nemcek, Milan

Pat a Mat, 1983

6n1/3R4/6N1/b2r4/4k1P1/p4r1R/K1P2B2/nQ6

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rb5
      • 2.Rd4#
    • 1...Rc5
      • 2.Rd4#
    • 1...Re5
      • 2.Rd4#
    • 1...Rf5
      • 2.Rd4#
    • 1...Rg5
      • 2.Rd4#
    • 1...Rh5
      • 2.Rd4#
  • Tries
    • 1.Re7+?
      • 1...Re5
        • 2.Rxe5#
        • 2.Qb7#
      • 1...Sxe7!
    • 1.Qe1+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Bxe1!
    • 1.Qb4+?
      • 1...Rd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Bxb4!
    • 1.Qb7?
      • threat
        • 2.Qxd5#
      • 1...Rd3
        • 2.cxd3#
      • 1...Sf6
        • 2.Re7#
      • 1...Se7
        • 2.Rxe7#
      • 1...Rf5!
    • 1.c3+?
      • 1...Rfd3
        • 2.Re3#
      • 1...Rdd3
        • 2.Rd4#
      • 1...Sc2!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qxf3#
      • 1...Rd3
        • 2.cxd3#
      • 1...Rf5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(f);OGATE::R1(H),XR(f)
    • R(f);OGATE::R1(H)
  • Tries
    • Try
      • R(H);CHECK
      • Refutation
        • S(g);XR(H)
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(A),XR(c)
      • Refutation
        • B(e);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • B(e);XQ(A)
    • Try
      • Q(A);P_PINR(f)
      • Threat
        • QAB1(A),XR(f)
      • Vars
        • R(c);OGATE::P(C),XR(c)
        • S(g);N_GUARD::R(H)
        • S(g);N_GUARD::R(H),XS(g)
      • Refutation
        • R(c);
    • Try
      • P(C);CHECK
      • Vars
        • R(c);OGATE,P_SPINR(c)::R1(E)
        • R(f);OGATE,P_SPINR(f)::R1(H)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(A);P_PINR(c)
    • Threat
      • QAB1(A),XR(c)
    • Vars
      • R(f);OGATE::P(C),XR(f)
      • R(f);OGATE::R1(H)
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