MESON Chess Problem Database

Problem Display
PID: 96581 (3Q1K2/r1B3p1/3N2p1/3P2Rp/3p1k2/2q4p/3P1rbN/1B4b1 w - - 0 1)

Moiseev, Vadim Petrovich

Problemas, 1975

3Q1K2/r1B3p1/3N2p1/3P2Rp/3p1k2/2q4p/3P1rbN/1B4b1

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sb7#
    • 1...Qb2
      • 2.Sb7#
    • 1...Qb3
      • 2.Sb7#
    • 1...Qf3
      • 2.Sb7#
    • 1...Qg3
      • 2.Sb7#
    • 1...Ra1
      • 2.Sc4#
    • 1...Ra2
      • 2.Sc4#
    • 1...Ra3
      • 2.Sc4#
    • 1...Ra4
      • 2.Sc4#
    • 1...Ra5
      • 2.Sc4#
    • 1...Ra8
      • 2.Sc4#
  • Tries
    • 1.Se4+?
      • 1...Rxc7
        • 2.Qd6#
      • 1...Qxc7!
    • 1.Sf7+?
      • 1...Rxc7
        • 2.Qd6#
      • 1...Qxc7!
    • 1.Rg4+?
      • 1...Ke5+
        • 2.Sf7#
      • 1...hxg4!
    • 1.Rf5+?
      • 1...Kg3
        • 2.Se4#
      • 1...gxf5!
    • 1.Rxg6?
      • threat
        • 2.Qg5#
      • 1...Ke5+
        • 2.Sf7#
      • 1...Qg3
        • 2.Sb7#
      • 1...Ra8
        • 2.Sc4#
      • 1...Bxh2!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Qg5#
      • 1...Kxg3+
        • 2.Sf5#
      • 1...Ke5+
        • 2.Sf7#
      • 1...Qxg3
        • 2.Sb7#
      • 1...Ra8
        • 2.Sc4#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(d);N_GUARD::B(G)+S(F)
    • R(j);N_GUARD::B(G)+S(F)
    • R(j);N_GUARD,P_PINQ(H)::B(G)+S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(j);XB(G)::QAB(H)
      • Refutation
        • Q(d);XB(G)
    • Try
      • S(F);CHECK
      • Vars
        • R(j);XB(G)::QAB(H)
      • Refutation
        • Q(d);XB(G)
    • Try
      • R(E);CHECK
      • Vars
        • K(g);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
      • Refutation
        • P(h);XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(g);P_PINR(E),S_FLIGHT::B(G)+S(F),DCHECK
      • Refutation
        • P(i);XR(E)
    • Try
      • R(E);XP(i)
      • Threat
        • QAB1(H)
      • Vars
        • K(g);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
        • Q(d);N_GUARD::B(G)+S(F)
        • R(j);N_GUARD,P_PINQ(H)::B(G)+S(F)
      • Refutation
        • B(a);XS(C)
  • Actual
    • R(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(g);CHECK,S_FLIGHT,XR(E)::B(G)+S(F),DCHECK
      • K(g);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
      • Q(d);N_GUARD,SBLOCK,XR(E)::B(G)+S(F)
      • R(j);N_GUARD,P_PINQ(H)::B(G)+S(F)
      • P(i);::QAB1(H),XP(i)
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