MESON Chess Problem Database

Problem Display
PID: 241307 (2N5/8/3PP1R1/pP1k4/Q2P2RK/8/2qrP3/8 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1926

2N5/8/3PP1R1/pP1k4/Q2P2RK/8/2qrP3/8

#2

10 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.e4#
    • 1...Qb3
      • 2.Qxb3#
      • 2.e4#
    • 1...Qf5
      • 2.Qb3#
    • 1...Qxg6
      • 2.Qb3#
    • 1...Qc1
      • 2.e4#
    • 1...Qa2
      • 2.e4#
    • 1...Qb2
      • 2.e4#
    • 1...Qc3
      • 2.e4#
    • 1...Qc5
      • 2.e4#
    • 1...Qc6
      • 2.e4#
    • 1...Qc7
      • 2.e4#
    • 1...Rd3
      • 2.e4#
    • 1...Rxd4
      • 2.Qxd4#
  • Tries
    • 1.R6g5+?
      • 1...Qf5
        • 2.Qb3#
      • 1...Kxe6!
    • 1.Qb3+?
      • 1...Qc4
        • 2.Qf3#
      • 1...Qxb3!
    • 1.Qb4?
      • threat
        • 2.Sb6#
        • 2.Se7#
      • 1...Qxg6
        • 2.Qb3#
      • 1...Qxc8
        • 2.e4#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Qxc5#
        • 2.e4#
      • 1...Qc6
        • 2.Se7#
        • 2.e4#
      • 1...Qc7
        • 2.e4#
      • 1...axb4!
  • Keys
    • 1.e7!
      • threat
        • 2.Sb6#
      • 1...Qxg6
        • 2.Qb3#
      • 1...Qxc8
        • 2.e4#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.e4#
      • 1...Qc6
        • 2.e4#
      • 1...Qc7
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::P(A)
    • Q(a);N_GUARD::QAB(B)
    • Q(a);N_GUARD,XR(I)::QAB(B)
    • R(b);S_CUTQ(a)::P(A)
    • R(b);OGATE,P_PINR(D),XP(C)::QAR1(B),XR(b)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::QAB(B)
      • Refutation
        • K(d);S_FLIGHT,XP(H)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a),SBLOCK::QAB(B)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD,XR(I)::QAB(B)
        • Q(a);N_GUARD,XS(J)::P(A)
        • R(b);OGATE,P_PINR(D),XP(C)::QAR1(B),XR(b)
        • Q(a);N_GUARD::P(A)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • P(H);
    • Threat
      • S(J)
    • Vars
      • Q(a);N_GUARD,XR(I)::QAB(B)
      • Q(a);N_GUARD,XS(J)::P(A)
      • R(b);OGATE,P_PINR(D),XP(C)::QAR1(B),XR(b)
      • Q(a);N_GUARD::P(A)
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