MESON Chess Problem Database

Problem Display
PID: 246431 (8/2B1P2B/2K1Pp2/1Pp2Nq1/Q1N1k1P1/3pp1P1/2rRRnP1/4r3 w - - 0 1)

Murashev, Pavel Aleksandrovich

Shakhmatnaya Poeziya, 2010

8/2B1P2B/2K1Pp2/1Pp2Nq1/Q1N1k1P1/3pp1P1/2rRRnP1/4r3

#2

14 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxd2#
    • 1...Rxc4
      • 2.Qxc4#
    • 1...dxe2
      • 2.Sfd6#
  • Tries
    • 1.Kxc5?
      • threat
        • 2.Qa8#
      • 1...Qxf5+
        • 2.Bxf5#
      • 1...Rxc4+
        • 2.Qxc4#
      • 1...Qg8
        • 2.Sd6#
      • 1...Ra2
        • 2.Sa3#
      • 1...Ra1!
    • 1.Sb2+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Sa3+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Scxe3+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Sa5+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Se5+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Sb6+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Bf4?
      • threat
        • 2.Scd6#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...Qxf4!
    • 1.Be5?
      • threat
        • 2.Sfd6#
      • 1...Qxf5
        • 2.Bxf5#
      • 1...fxe5
        • 2.Scd6#
      • 1...Rxc4!
    • 1.Rd1?
      • threat
        • 2.Sd2#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...dxe2
        • 2.Sfd6#
      • 1...Rd2
        • 2.Sxd2#
      • 1...d2!
    • 1.e8S?
      • threat
        • 2.Se8d6#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...Qf4
        • 2.Sxf6#
      • 1...Qxf5!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Sfd6#
      • 1...Kxd3
        • 2.Qxc2#
      • 1...Qxf5
        • 2.Bxf5#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...Sxd3
        • 2.Sd2#
      • 1...Qg6
        • 2.Rdxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);XR(A)::QAR(E)+S(F),DCHECK,XR(b)
    • R(b);OGATE,P_SPINR(b),XS(F)::QAR2(E),XR(b)
    • P(d);N_SPINP(e),XR(B)::B(N)+S(I),DCHECK
  • Tries
    • Try
      • K(J);P-FLIGHT,P_SPINS(F),XP(g)
      • Threat
        • QAB(E)
      • Vars
        • Q(h);CHECK,OGATE,P_SPINQ(h),XS(I)::B(N),XQ(h)
        • R(b);CHECK,OGATE,P_PINS(I),P_SPINR(b),XS(F)::QAR2(E),XR(b)
        • Q(h);::B(N)+S(I),DCHECK
        • R(b);N_PINS(F),P_PINS(I)::QAR(E)+S(F)
      • Refutation
        • R(a);
    • Try
      • S(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);
    • Try
      • S(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);
    • Try
      • S(F);CHECK,XP(e)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • S(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);
    • Try
      • S(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);
    • Try
      • S(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(E),XR(b)
      • Refutation
        • P(g);
    • Try
      • B(L);
      • Threat
        • QAR(E)+S(F),DCHECK
      • Vars
        • R(b);OGATE,P_SPINR(b),XS(F)::QAR2(E),XR(b)
      • Refutation
        • Q(h);XB(L)
    • Try
      • B(L);
      • Threat
        • B(N)+S(I),DCHECK
      • Vars
        • Q(h);OGATE,P_SPINQ(h),XS(I)::B(N),XQ(h)
        • P(i);SBLOCK,XB(L)::QAR(E)+S(F),DCHECK
      • Refutation
        • R(b);P_SPINR(b),XS(F)
    • Try
      • R(A);
      • Threat
        • QAR(E)+S(F),DCHECK
      • Vars
        • R(b);OGATE,P_SPINR(b),XS(F)::QAR2(E),XR(b)
        • P(d);N_SPINP(e),XR(B)::B(N)+S(I),DCHECK
        • R(b);::QAR(E)+S(F),DCHECK,XR(b)
      • Refutation
        • P(d);
    • Try
      • P(M);
      • Threat
        • S(M)
      • Vars
        • R(b);OGATE,P_SPINR(b),XS(F)::QAR2(E),XR(b)
        • Q(h);N_GUARD::S(M),XP(i)
      • Refutation
        • Q(h);P_SPINQ(h),XS(I)
  • Actual
    • R(A);XP(d)
    • Threat
      • B(N)+S(I),DCHECK
    • Vars
      • K(f);N_SPINP(e),OGATEB,S_FLIGHT,XR(A)::QAB1(E),XR(b)
      • Q(h);OGATE,P_SPINQ(h),XS(I)::B(N),XQ(h)
      • R(b);OGATE,P_SPINR(b),XS(F)::QAR2(E),XR(b)
      • S(c);SBLOCK,XR(A)::QAR(E)+S(F),DCHECK
      • Q(h);N_GUARD::R1(A),XP(e)
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