MESON Chess Problem Database

Problem Display
PID: 251611 (3b4/1p6/b7/QppK2p1/5pr1/2p1k2N/5R2/RnN3B1 w - - 0 1)

Svitek, Miroslav

Uris, Miguel

Problemas, 2021

3b4/1p6/b7/QppK2p1/5pr1/2p1k2N/5R2/RnN3B1

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qxc3#
    • 1...Sa3
      • 2.Qxc3#
    • 1...c2
      • 2.Qe1#
    • 1...f3
      • 2.Re2#
    • 1...b4
      • 2.Qxc5#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Re4#
      • 1...bxa4
        • 2.Qxc5#
      • 1...Sd2
        • 2.Qxc3#
      • 1...f3
        • 2.Re2#
      • 1...b4
        • 2.Qxc5#
      • 1...c4!
    • 1.Rf1+?
      • 1...Kd2
        • 2.Ra2#
      • 1...Rxg1!
    • 1.Qb4?
      • threat
        • 2.Qxc5#
        • 2.Qe4#
      • 1...Bb6
        • 2.Qe4#
      • 1...Bf6
        • 2.Qe4#
      • 1...Be7
        • 2.Qe4#
      • 1...Sd2
        • 2.Qxc3#
        • 2.Qxc5#
      • 1...f3
        • 2.Re2#
      • 1...c4
        • 2.Qc5#
      • 1...b6
        • 2.Qe4#
      • 1...cxb4!
    • 1.Qxd8?
      • threat
        • 2.Qe7#
        • 2.Qe8#
      • 1...f3
        • 2.Re2#
      • 1...Sd2!
  • Keys
    • 1.Raa2!
      • threat
        • 2.Rae2#
      • 1...Sd2
        • 2.Qxc3#
      • 1...c2
        • 2.Qe1#
      • 1...f3
        • 2.Rfe2#
      • 1...b4
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAR2(F),XP(b)
    • P(b);OGATE::QAR2(F)
    • P(d);SBLOCK::B(C)+R(D),DCHECK
    • P(f);OGATE::QAB(F),XP(g)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • P(f);OGATE,XR(A)::QAB(F),XP(g)
        • S(a);N_GUARD::QAR2(F),XP(b)
        • P(d);SBLOCK::B(C)+R(D),DCHECK
        • P(f);OGATE::QAB(F),XP(g)
      • Refutation
        • P(g);
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P_SPINP(b),S_CUTR(e),S_FLIGHT::R(A)
      • Refutation
        • R(e);XB(C)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(k);::QAR1(F)
        • P(d);SBLOCK::B(C)+R(D),DCHECK
        • P(g);::QAB(F)
        • P(j);::QAR1(F)
      • Refutation
        • P(g);XQ(F)
    • Try
      • Q(F);XB(k)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);SBLOCK::B(C)+R(D),DCHECK
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • S(a);N_GUARD::QAR2(F),XP(b)
      • P(b);OGATE::QAR2(F)
      • P(d);SBLOCK::B(C)+R(D),DCHECK
      • P(f);OGATE::QAB(F),XP(g)
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