MESON Chess Problem Database

Problem Display
PID: 23225 (B7/2p1K3/2N1P1p1/3k4/2pPp3/2r1rP2/8/4Q3 w - - 0 1)

Rychkov, Vladimir Nikolaevich

Zheltonozhko, Vladimir Ivanovich

3rd HM., Problemist Yuga , 1996

B7/2p1K3/2N1P1p1/3k4/2pPp3/2r1rP2/8/4Q3

#2

7 + 7

6022 Ukraine Album 1999 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qa5#
    • 1...Rc2
      • 2.Qa5#
    • 1...Rcd3
      • 2.Qa5#
    • 1...Red3
      • 2.Qxe4#
      • 2.fxe4#
  • Tries
    • 1.Qxc3?
      • threat
        • 2.Sb4#
        • 2.Qa5#
      • 1...exf3
        • 2.Sb4#
      • 1...Rxc3!
    • 1.Qg3?
      • threat
        • 2.Qe5#
        • 2.Qg5#
      • 1...Rxf3
        • 2.Qe5#
      • 1...g5
        • 2.Qe5#
        • 2.Qxg5#
      • 1...exf3!
    • 1.Qh4?
      • threat
        • 2.Qg5#
      • 1...exf3
        • 2.Sb4#
      • 1...g5
        • 2.Qxg5#
      • 1...Rxf3!
    • 1.Qa1?
      • threat
        • 2.Qa5#
      • 1...Ra3
        • 2.Sb4#
      • 1...Rb3
        • 2.Sb4#
      • 1...exf3!
    • 1.Qg1?
      • threat
        • 2.Qg5#
      • 1...Rxf3
        • 2.Sb4#
      • 1...g5
        • 2.Qxg5#
      • 1...exf3!
    • 1.Qxe3?
      • threat
        • 2.Sb4#
        • 2.Qg5#
        • 2.Qxe4#
        • 2.fxe4#
      • 1...exf3
        • 2.Sb4#
        • 2.Qe5#
      • 1...g5
        • 2.Sb4#
        • 2.Qxg5#
        • 2.Qxe4#
        • 2.fxe4#
      • 1...Rxe3!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sb4#
      • 1...Rcd3
        • 2.Qa5#
      • 1...Red3
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATE::QAR(A)
  • Tries
    • Try
      • Q(A);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);P_PINP(E),XP(B)::B(G)+S(D),DCHECK
      • Refutation
        • R(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(B)::QAR1(A)
      • Refutation
        • P(d);P_PINP(E),XP(B)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(d);P_PINP(E),XP(B)::B(G)+S(D),DCHECK
        • P(f);::QAR(A),XP(f)
      • Refutation
        • R(b);XP(B)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • R(a);::B(G)+S(D),DCHECK
      • Refutation
        • P(d);P_PINP(E),XP(B)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • R(b);XP(B)::B(G)+S(D),DCHECK
        • P(f);::QAR(A),XP(f)
      • Refutation
        • P(d);P_PINP(E),XP(B)
    • Try
      • Q(A);XR(b)
      • Threat
        • DUALS(4)
      • Refutation
        • R(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • B(G)+S(D),DCHECK
    • Vars
      • R(a);OGATE::QAR(A)
      • R(b);OGATE::QAR(A)
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