MESON Chess Problem Database

Problem Display
PID: 197868 (7b/pQ1N4/nr1R4/K3p3/Bpk5/1N5r/3B2b1/4Rn1q w - - 0 1)

Pavlov, Yury A

Zadachi i Etyudi, 1997

7b/pQ1N4/nr1R4/K3p3/Bpk5/1N5r/3B2b1/4Rn1q

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Rc1#
    • 1...Rf3
      • 2.Re4#
      • 2.Qe4#
      • 2.Qd5#
    • 1...Rh4
      • 2.Rc1#
    • 1...Rh5
      • 2.Rc1#
    • 1...Rh6
      • 2.Rc1#
    • 1...Rh7
      • 2.Rc1#
    • 1...Rb5+
      • 2.Qxb5#
    • 1...Rc6
      • 2.Qb5#
    • 1...Rxd6
      • 2.Qb5#
    • 1...Bf3
      • 2.Rc1#
    • 1...e4
      • 2.Qd5#
  • Tries
    • 1.Qxa6+?
      • 1...Rb5+
        • 2.Qxb5#
      • 1...Rxa6+!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rc1#
        • 2.Re4#
      • 1...Rb5+
        • 2.Bxb5#
      • 1...Rxf3
        • 2.Re4#
      • 1...Rxd6
        • 2.Bb5#
        • 2.Rc1#
      • 1...Bxf3
        • 2.Rc1#
      • 1...Sxd2
        • 2.Sxd2#
      • 1...Qg1
        • 2.Rc1#
      • 1...Rh4
        • 2.Rc1#
        • 2.Qe2#
        • 2.Qd3#
      • 1...Sh2
        • 2.Re4#
      • 1...Se3
        • 2.Qe2#
      • 1...Sg3
        • 2.Qd3#
      • 1...Sc5
        • 2.Rc1#
      • 1...e4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • R(d);N_GUARD::R(A)
    • R(i);CHECK,OGATE::QAB1(G),XR(i)
    • R(i);OGATE::QAB1(G)
    • R(i);OGATE,XR(F)::QAB1(G)
    • B(c);S_CUTR(d)::R(A)
    • P(g);S_CUTB(c)::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK,XS(h)
      • Vars
        • R(i);CHECK,N_GUARD,P_SPINR(i)::QAB1(G),XR(i)
      • Refutation
        • R(i);CHECK,XQ(G)
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • R(i);CHECK,N_GUARD::B(D),XR(i)
      • R(d);XQ(G)::R(A)
      • B(c);XQ(G)::R(A)
      • S(a);XB(B)::S(C),XS(a)
      • Q(b);::R(A)
      • S(a);::R(A)
      • S(a);S_CUTR(d)::QAB(G)
      • S(a);S_CUTR(d)::QAB1(G)
      • S(h);::R(A)
      • P(g);S_CUTB(c)::QAB(G)
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